Thienopyridine derivatives for the treatment and prevention of dengue virus infections

ABSTRACT

Methods and pharmaceutical compositions for treating viral infections, by administering certain thienopyridine derivative compounds in therapeutically effective amounts are disclosed. Methods of using the compounds and pharmaceutical compositions thereof are also disclosed. In particular, the treatment and prophylaxis of viral infections such as caused by flavivirus is disclosed, i.e., including but not limited to, Dengue virus, West Nile virus, yellow fever virus, Japanese encephalitis virus, and tick-borne encephalitis virus.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is the United States national phase filing of the corresponding international application number PCT/US2010/025183, filed on Feb. 24, 2010, which claims priority to and benefit of U.S. Application No. 61/156,132, filed Feb. 27, 2009, which applications are hereby incorporated by reference in their entirety.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

This invention was made with U.S. government support under Grant No. 1R43AI079937-01A1 awarded by the National Institute of Health (NIH). The U.S. Government has certain rights in the invention.

FIELD OF THE INVENTION

This invention relates to the use of thienopyridine derivatives and analogs, as well as compositions containing the same, for the treatment or prophylaxis of viral diseases associated with the flavivirus family such as Dengue fever, Yellow fever, West Nile, St. Louis encephalitis, Hepatitis C, Murray Valley encephalitis, and Japanese encephalitis.

BACKGROUND OF THE INVENTION

Dengue fever (DF) is an acute febrile disease caused by one of four closely related virus serotypes (DEN-1, DEN-2, DEN-3, and DEN-4). Dengue fever is classified based on its clinical characteristics into classical dengue fever, or the more severe forms, dengue hemorrhagic fever syndrome (DHF), and dengue shock syndrome (DSS). Recovery from infection from one serotype produces life-long immunity to that particular serotype, but provides only short-lived and limited protection against any of the other serotypes (32). Dengue is a member of the Flaviviridae family which are enveloped, positive-sense RNA viruses whose human pathogens also include West Nile virus (WNV), yellow fever virus (YFV), Japanese encephalitis virus (JEV), and tick-borne encephalitis virus (TBEV) among others. Dengue transmission is via the bite of an infected Aedes aegypti mosquito which is found in tropical and sub-tropical regions around the world.

Each year regional epidemics of dengue cause significant morbidity and mortality, social disruption and substantial economic burden on the societies affected both in terms of hospitalization and mosquito control. Dengue is considered by the World Health Organization (WHO) to be the most important arthropod-borne viral disease with an estimated 50 million cases of dengue infection, including 500,000 DHF cases and 24,000 deaths worldwide each year (32, 33). WHO estimates that forty percent of the world's population (2.5 billion people) are at risk for DF, DHF, and DSS (32). Dengue is also a NIAID Category A pathogen and in terms of bio-defense, represents a significant threat to United States troops overseas. Dengue is an emerging threat to North America with a dramatic increase in severe disease in the past 25 years including major epidemics in Cuba and Venezuela, and outbreaks in Texas and Hawaii (4). Failure to control the mosquito vector and increases in long-distance travel have contributed to the increase and spread of dengue disease. The characteristics of dengue as a viral hemorrhagic fever virus (arthropod-borne, widely spread, and capable of inducing a great amount of cellular damage and eliciting an immune response that can result in severe hemorrhage, shock, and death) makes this virus a unique threat to deployed military personnel around the world as well as to travelers to tropical regions. Preparedness for both biodefense and for the public health challenges posed by dengue will require the development of new vaccines and antiviral therapeutics.

Dengue causes several illnesses with increasing severity being determined in part by prior infection with a different serotype of the virus. Classic dengue fever (DF) begins 3-8 days after the bite of an infected mosquito and is characterized by sudden onset of fever, headache, back pain, joint pain, a measles-like rash, and nausea and vomiting (20). DF is frequently referred to as “breakbone” fever due to these symptoms. The disease usually resolves after two weeks but a prolonged recovery with weakness and depression is common. The more severe form of the disease, dengue hemorrhagic fever (DHF) has a similar onset and early phase of illness as dengue fever. However, shortly after onset the disease is characterized by high fever, enlargement of the liver, and hemorrhagic phenomena such as bleeding from the nose, mouth, and internal organs due to vascular permeability (33). In dengue shock syndrome (DSS) circulatory failure and hypovolaemic shock resulting from plasma leakage occur and can lead to death in 12-24 hours without plasma replacement (33). The case fatality rate of DHF/DSS can be as high as 20% without treatment. DHF has become a leading cause of hospitalization and death among children in many countries with an estimated 500,000 cases requiring hospitalization each year and a case fatality rate of about 5% (32).

The pathogenesis of DHF/DSS is still being studied but is thought to be due in part to an enhancement of virus replication in macrophages by heterotypic antibodies, termed antibody-dependent enhancement (ADE) (8). During a secondary infection, with a different serotype of dengue virus, cross-reactive antibodies that are not neutralizing form virus-antibody complexes that are taken into monocytes and Langerhans cells (dendritic cells) and increase the number of infected cells (7). This leads to the activation of cytotoxic lymphocytes which can result in plasma leakage and the hemorrhagic features characteristic of DHF and DSS (20). This antibody-dependent enhancement of infection is one reason why the development of a successful vaccine has proven to be so difficult. Although less frequent, DHF/DSS can occur after primary infection (29), so virus virulence (15) and immune activation are also believed to contribute to the pathogenesis of the disease (25).

Dengue is endemic in more than 100 countries in Africa, the Americas, the Eastern Mediterranean, South-east Asia and the Western Pacific. During epidemics, attack rates can be as high as 80-90% of the susceptible population. All four serotypes of the virus are emerging worldwide, increasing the number of cases of the disease as well as the number of explosive outbreaks. In 2002 for example, there were 1,015,420 reported cases of dengue in the Americas alone with 14,374 cases of DHF, which is more than three times the number of dengue cases reported in the Americas in 1995 (23).

The dengue genome, approximately 11 kb in length, consists of a linear, single stranded, infectious, positive sense RNA that is translated as a single long polyprotein (reviewed in (27)). The genome is composed of seven nonstructural (NS) protein genes and three structural protein genes which encode the nucleocapsid protein (C), a membrane-associated protein (M), and an envelope protein (E). The nonstructural proteins are involved in viral RNA replication (31), viral assembly, and the inflammatory components of the disease (18). The structural proteins are involved mainly in viral particle formation (21). The precursor polyprotein is cleaved by cellular proteinases to separate the structural proteins (17), while a virus-encoded proteinase cleaves the nonstructural region of the polyprotein (6). The genome is capped and does not have a poly(A) tail at the 3′ end but instead has a stable stem-loop structure necessary for stability and replication of the genomic RNA (3). The virus binds to cellular receptors via the E protein and undergoes receptor-mediated endocytosis followed by low-pH fusion in lysosomes (19). The viral genome is then uncoated and translated into the viral precursor polyprotein. Co- and posttranslational proteolytic processing separates the structural and nonstructural proteins. The RNA-dependent RNA polymerase along with cofactors synthesizes the minus-strand RNA which serves as a template for the synthesis of the progeny plus-strand RNA (24). Viral replication is membrane associated (1, 30). Following replication, the genome is encapsidated, and the immature virus, surrounded by a lipid envelope buds into the lumen (9). The envelope proteins become glycosylated and mature viruses are released outside the cell. Essential stages or process during the virus life cycle would be possible targets for inhibition from an antiviral drug and include binding of the virus to the cell through the E protein, uptake of the virus into the cell, the capping mechanism, the viral proteinase, the viral RNA-dependent RNA polymerase, and the viral helicase.

Current management of dengue virus-related disease relies solely on vector control. There are no approved antivirals or vaccines for the treatment or prevention of dengue. Ribavirin, a guanosine analogue, has been shown to be effective against a range of RNA virus infections and works against dengue in tissue culture by inhibiting the dengue 2′-O-methyltransferase NS5 domain (2, 10). However, ribavirin did not show protection against dengue in a mouse model (14) or a rhesus monkey model (16), instead it induced anemia and thrombocytosis. While there are no currently available approved vaccines, multivalent dengue vaccines have shown some limited potential in humans (5, 11, 12, 26). However, vaccine development is difficult due to the presence of four distinct serotypes of the virus which each cause disease. Vaccine development also faces the challenge of ADE where unequal protection against the different strains of the virus could actually increase the risk of more serious disease. Therefore there is a need for antiviral drugs that target all of the serotypes of dengue. An antiviral drug administered early during dengue infection that inhibits viral replication would prevent the high viral load associated with DHF and be an attractive strategy in the treatment and prevention of disease. An antiviral drug that inhibits viral replication could be administered prior to travel to a dengue endemic region to prevent acquisition of disease, or for those that have previously been exposed to dengue, could prevent infection by another serotype of virus and decrease the chance of life-threatening DHF and DSS. Having an antiviral drug would also aid vaccine development by having a tool at hand to treat complications that may arise due to unequal immune protection against the different serotypes. Although a successful vaccine could be a critical component of an effective biodefense, the typical delay to onset of immunity, potential side-effects, cost, and logistics associated with large-scale civilian vaccinations against a low-threat risk agent suggest that a comprehensive biodefense include a separate rapid-response element. Thus, there remains an urgent need to develop a safe and effective product to protect against flavivirus infection.

SUMMARY OF THE INVENTION

The present invention provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound having the following general Formula I or a pharmaceutically acceptable salt thereof:

wherein X is selected from the groups consisting of O, S and N—R′, wherein R′ is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

R is selected from the group consisting of halogen, cyano, isocyano, nitro, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, hydroxysulfonyl, aminosulfonyl, substituted aminosulfonyl, acyl, arylacyl, heteroarylacyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, aminocarbonyl, and substituted aminocarbonyl, or R and R¹ together with the carbons they are attached to may form a substituted or unsubstituted ring; and

-   -   A, B, D, and E are independently N or C—R¹, C—R², C—R³ and C—R⁴,         respectively, wherein R¹, R², R³ and R⁴ are independently         selected from the group consisting of hydrogen, substituted or         unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl,         heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy,         alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy,         heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio,         alkylthio, arylthio, amino, alkylamino, dialkylamino,         cycloalkylamino, heterocycloalkylamino, arylamino,         heteroarylamino, acylamino, arylacylamino, heteroarylacylamino,         alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl,         heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl,         arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy,         alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl,         carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and         nitro; or R¹ and R together with the carbons they are attached         to may form a substituted or unsubstituted ring, or R² and R³ or         R³ and R⁴ together with the carbons they are attached to may         form a substituted or unsubstituted ring, which may be aromatic         or non-aromatic and may include one or more heteroatoms in the         ring and may be fused with an aromatic or aliphatic ring.

The present invention also provides a pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound having the following general Formula II or a pharmaceutically acceptable salt thereof:

wherein X is selected from the groups consisting of O, S or N—R′, wherein R′ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

B is N or C—R², wherein R² is selected from the groups consisting of hydrogen, substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy, alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy, heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio, alkylthio, arylthio, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl, heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and nitro;

G is selected from the group consisting of —C(═O)—, —C(═S)—, —S(═O)₂—, and —C(═NR⁵)—, wherein R⁵ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁵ and R⁶ or R⁷, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁵ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring;

R⁶, R⁷, R⁸, and R⁹ are independently selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁶ or R⁷ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁸ or R⁹ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, or R⁶ or R⁷ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon or sulfur of G and two carbons of the X-containing 5-membered ring, or R⁶ and R⁷, together with the nitrogen atom they are attached to, or R⁸ and R⁹, together with the nitrogen atom they are attached to, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring; and

is a 7 or 8-membered ring which contains one or more heteroatoms selected from N, O and S, or a 4-membered ring which may optionally contain one or more heteroatoms selected from N, O and S. The ring may be substituted or unsubstituted, or fused with another ring, which may be aromatic or non-aromatic and may include one or more heteroatoms in the ring and may be fused with an aromatic or aliphatic ring.

The present invention further provides a method for the treatment or prophylaxis of a viral infection or disease associated therewith, comprising administering in a therapeutically effective amount to a mammal in need thereof, a compound of Formula I below or a pharmaceutically acceptable salt thereof:

wherein X is selected from the groups consisting of O, S and N—R′, wherein R′ is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

R is selected from the group consisting of halogen, cyano, isocyano, nitro, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, hydroxysulfonyl, aminosulfonyl, substituted aminosulfonyl, acyl, arylacyl, heteroarylacyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, aminocarbonyl, and substituted aminocarbonyl, or R and R¹ together with the carbons they are attached to may form a substituted or unsubstituted ring; and

-   -   A, B, D, and E are independently N or C—R¹, C—R², C—R³ and C—R⁴,         respectively, wherein R¹, R², R³ and R⁴ are independently         selected from the group consisting of hydrogen, substituted or         unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl,         heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy,         alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy,         heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio,         alkylthio, arylthio, amino, alkylamino, dialkylamino,         cycloalkylamino, heterocycloalkylamino, arylamino,         heteroarylamino, acylamino, arylacylamino, heteroarylacylamino,         alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl,         heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl,         arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy,         alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl,         carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and         nitro; or R¹ and R together with the carbons they are attached         to may form a substituted or unsubstituted ring, or R² and R³ or         R³ and R⁴ together with the carbons they are attached to may         form a substituted or unsubstituted ring, which may be aromatic         or non-aromatic and may include one or more heteroatoms in the         ring and may be fused with an aromatic or aliphatic ring.

The present invention also provides a method for the treatment or prophylaxis of a viral infection or disease associated therewith, comprising administering in a therapeutically effective amount to a mammal in need thereof, a compound of Formula II below or a pharmaceutically acceptable salt thereof:

wherein X is selected from the groups consisting of O, S or N—R′, wherein R′ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

B is N or C—R², wherein R² is selected from the groups consisting of hydrogen, substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy, alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy, heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio, alkylthio, arylthio, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl, heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and nitro;

G is selected from the group consisting of —C(═O)—, —C(═S)—, —S(═O)₂—, and —C(═NR⁵)—, wherein R⁵ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁵ and R⁶ or R⁷, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁵ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring;

R⁶, R², R⁸, and R⁹ are independently selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁶ or R⁷ and R⁸, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁸ or R⁹ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, or R⁶ or R⁷ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon or sulfur of G and two carbons of the X-containing 5-membered ring, or R⁶ and R⁷, together with the nitrogen atom they are attached to, or R⁸ and R⁹, together with the nitrogen atom they are attached to, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring; and

is a 7 or 8-membered ring which contains one or more heteroatoms selected from N, O and S, or a 4-membered ring which may optionally contain one or more heteroatoms selected from N, O and S. The ring may be substituted or unsubstituted, or fused with another ring, which may be aromatic or non-aromatic and may include one or more heteroatoms in the ring and may be fused with an aromatic or aliphatic ring.

The present invention further provides a compound having the following general Formula II or a pharmaceutically acceptable salt thereof:

wherein X is selected from the groups consisting of O, S or N—R′, wherein R′ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

B is N or C—R², wherein R² is selected from the groups consisting of hydrogen, substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy, alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy, heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio, alkylthio, arylthio, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl, heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and nitro;

G is selected from the group consisting of —C(═O)—, —C(═S)—, —S(═O)₂—, and —C(═NR⁵)—, wherein R⁵ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁵ and R⁶ or R⁷, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁵ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring;

R⁶, R⁷, R⁸, and R⁹ are independently selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁶ or R⁷ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁸ or R⁹ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, or R⁶ or R⁷ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon or sulfur of G and two carbons of the X-containing 5-membered ring, or R⁶ and R⁷, together with the nitrogen atom they are attached to, or R⁸ and R⁹, together with the nitrogen atom they are attached to, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring; and

is a 7 or 8-membered ring which contains one or more heteroatoms selected from N, O and S, or a 4-membered ring which may optionally contain one or more heteroatoms selected from N, O and S. The ring may be substituted or unsubstituted, or fused with another ring, which may be aromatic or non-aromatic and may include one or more heteroatoms in the ring and may be fused with an aromatic or aliphatic ring.

The present invention also provides novel intermediate compounds used in the synthesis of the compounds of the present invention. These intermediate compounds are selected from the group consisting of: tert-butyl (4E)-4-(hydroxymethylene)-5-oxoazepane-1-carboxylate; tert-butyl (3E)-3-(hydroxymethylene)-4-oxoazepane-1-carboxylate; tert-butyl 3-cyano-2-thioxo-1,2,5,6,8,9-hexahydro-7H-pyrido[2,3-d]azepine-7-carboxylate; tert-butyl 3-cyano-2-thioxo-1,2,5,7,8,9-hexahydro-6H-pyrido[3,2-c]azepine-6-carboxylate; and 3-amino-7-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide; and 3-amino-6-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.

The present invention further provides a method for the preparation of a mixture of tert-butyl (4E)-4-(hydroxymethylene)-5-oxoazepane-1-carboxylate and tert-butyl (3E)-3-(hydroxymethylene)-4-oxoazepane-1-carboxylate, said method comprising reacting tert-butyl 4-oxoazepane-1-carboxylate with N-[tert-butoxy(dimethylamino)methyl]-N,N-dimethylamine.

The present invention also provides a method for the preparation of a mixture of tert-butyl 3-cyano-2-thioxo-1,2,5,6,8,9-hexahydro-7H-pyrido[2,3-d]azepine-7-carboxylate and tert-butyl 3-cyano-2-thioxo-1,2,5,7,8,9-hexahydro-6H-pyrido[3,2-c]azepine-6-carboxylate said method comprising reacting a mixture of tert-butyl (4E)-4-(hydroxymethylene)-5-oxoazepane-1-carboxylate and tert-butyl (3E)-3-(hydroxymethylene)-4-oxoazepane-1-carboxylate in the presence of 2-cyanoethanethioamide and piperidine acetate.

The present invention further provides a method for the preparation of 3-amino-7-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide comprising reacting tert-butyl 3-cyano-2-thioxo-1,2,5,6,8,9-hexahydro-7H-pyrido[2,3-d]azepine-7-carboxylate with 2-chloro-N-(5-phenyl-1,3,4-thiadiazol-2-yl)acetamide.

The present invention also provides a method for the preparation of 3-amino-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide comprising reacting 3-amino-7-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide with HCl.

The present invention further provides a method for the preparation of 3-amino-6-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide comprising reacting tert-butyl 3-cyano-2-thioxo-1,2,5,7,8,9-hexahydro-6H-pyrido[3,2-c]azepine-6-carboxylate with 2-chloro-N-(5-phenyl-1,3,4-thiadiazol-2-yl)acetamide.

The present invention also provides a method for the preparation of 3-amino-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide comprising reacting 3-amino-6-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide with HCl.

Other objects and advantages of the present invention will become apparent from the following description and appended claims.

DETAILED DESCRIPTION OF THE INVENTION

The compounds of the invention are of the following general Formula I:

wherein X is selected from the groups consisting of O, S and N—R′, wherein R′ is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

R is selected from the group consisting of halogen, cyano, isocyano, nitro, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, hydroxysulfonyl, aminosulfonyl, substituted aminosulfonyl, acyl, arylacyl, heteroarylacyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, aminocarbonyl, and substituted aminocarbonyl, or R and R¹ together with the carbons they are attached to may form a substituted or unsubstituted ring; and

A, B, D, and E are independently N or C—R¹, C—R², C—R³ and C—R⁴, respectively, wherein R¹, R², R³ and R⁴ are independently selected from the group consisting of hydrogen, substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy, alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy, heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio, alkylthio, arylthio, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl, heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and nitro; or R¹ and R together with the carbons they are attached to may form a substituted or unsubstituted ring, or R² and R³ or R³ and R⁴ together with the carbons they are attached to may form a substituted or unsubstituted ring, which may be aromatic or non-aromatic and may include one or more heteroatoms in the ring and may be fused with an aromatic or aliphatic ring.

Preferably, for the compound of Formula I, X is S; A is C—NH₂, B is C—R² and R² is fluoro substituted phenyl or B is C—H; D is a C—H; E is C—R⁴ and R⁴ is a thienyl or D is C—R³ and E is C—R⁴, and R³ and R⁴ form a ring; and/or R is a substituted aminocarbonyl.

Preferably the compound of Formula I of the present invention is selected from the group consisting of: 3-amino-6,7,8,9-tetrahydro-5H-1-thia-10-aza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide; 1-amino-5-methyl-6,7,8,9-tetrahydro-thieno[2,3-c]isoquinoline-2-carboxylic acid (4-methyl-thiazol-2-yl)-amide; 3,6-diamino-5-cyano-4-furan-2-yl-thieno[2,3-b]pyridine-2-carboxylic acid (4-bromo-phenyl)-amide; 3-amino-6-ethyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carboxylic acid (4-trifluoromethyl-phenyl)-amide; 4-[(3-amino-6-isopropyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carbonyl)-amino]-benzoic acid ethyl ester; and 3-amino-6-methyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carboxylic acid (4-trifluoromethoxy-phenyl)-amide.

More preferably, the compound of Formula I of the present invention is 3-amino-6,7,8,9-tetrahydro-5H-1-thia-10-aza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.

The compounds of the invention are also of the following general Formula II:

wherein X is selected from the groups consisting of O, S or N—R′, wherein R′ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl;

B is N or C—R², wherein R² is selected from the groups consisting of hydrogen, substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, hydroxy, alkyloxy, aryloxy, heteroaryloxy, acyloxy, arylacyloxy, heteroarylacyloxy, alkylsulfonyloxy, arylsulfonyloxy, thio, alkylthio, arylthio, amino, alkylamino, dialkylamino, cycloalkylamino, heterocycloalkylamino, arylamino, heteroarylamino, acylamino, arylacylamino, heteroarylacylamino, alkylsulfonylamino, arylsulfonylamino, acyl, arylacyl, heteroarylacyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, aminosulfonyl, substituted aminosulfonyl, carboxy, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl, substituted carbamoyl, halogen, cyano, isocyano and nitro;

G is selected from the group consisting of —C(═O)—, —C(═S)—, —S(═O)₂—, and —C(═NR⁵)—, wherein R⁵ is selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁵ and R⁶ or R⁷, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁵ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring;

R⁶, R⁷, R⁸, and R⁹ are independently selected from the groups consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, arylalkyl, aryl, heteroaryl, acyl, arylacyl, heteroarylacyl, sulfonyl, aminosulfonyl, substituted aminosulfonyl, alkoxycarbonyl, cycloalkyloxycarbonyl, aryloxycarbonyl, carbamoyl and substituted carbamoyl; or R⁶ or R⁷ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G, or R⁸ or R⁹ and R⁵, together with the nitrogen atoms they are attached to, along with the carbon of G and two carbons of the X-containing 5-membered ring, or R⁶ or R⁷ and R⁸ or R⁹, together with the nitrogen atoms they are attached to, along with the carbon or sulfur of G and two carbons of the X-containing 5-membered ring, or R⁶ and R⁷, together with the nitrogen atom they are attached to, or R⁸ and R⁹, together with the nitrogen atom they are attached to, may form a substituted or unsubstituted ring, which may be fused with an aromatic or aliphatic ring; and

is a 7 or 8-membered ring which contains one or more heteroatoms selected from N, O and S, or a 4-membered ring which may optionally contain one or more heteroatoms selected from N, O and S. The ring may be substituted or unsubstituted, or fused with another ring, which may be aromatic or non-aromatic and may include one or more heteroatoms in the ring and may be fused with an aromatic or aliphatic ring.

Preferably, for the compound of Formula II, X is S; B is CH; each of R⁸ and R⁹ is H; G is —C(═O)—; R⁶ is a hydrogen; R⁷ is a heteroaryl; and

is a 7-membered ring which contains N as a heteroatom.

Preferably, the compound of Formula II of the present invention is 3-amino-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.

Also preferably, the compound of Formula II of the present invention is 3-amino-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.

The method of the present invention is for the treatment or prophylaxis of a viral infection or disease associated therewith, comprising administering in a therapeutically effective amount to a mammal in need thereof, a compound of Formula I or Formula II as described above.

Preferably, the mammal is a human and the viral infection is a flavivirus infection. More preferably, the flavivirus is selected from the group consisting of Dengue virus, West Nile virus, yellow fever virus, Japanese encephalitis virus, and tick-borne encephalitis virus. Most preferably, the flavivirus is a Dengue virus selected from the group consisting of DEN-1, DEN-2, DEN-3, and DEN-4.

Preferably, the viral infection is associated with a condition selected from the group consisting of Dengue fever, Yellow fever, West Nile, St. Louis encephalitis, Hepatitis C, Murray Valley encephalitis, and Japanese encephalitis. Most preferably, the viral infection is associated with Dengue fever wherein said Dengue fever is selected from the group consisting of classical dengue fever, dengue hemorrhagic fever syndrome, and dengue shock syndrome.

The method of the present invention may also comprise co-administration of: a) other antivirals such as Ribavirin or cidofovir; b) vaccines; and/or c) interferons or pegylated interferons.

The present invention also provides for methods of synthesis of compounds of the present invention, in particular 3-amino-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide and 3-amino-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide. These methods of synthesis are provided below in Examples 14 and 15.

Novel Intermediates in the synthesis of the compounds of the present invention include but are not limited to each of tert-butyl (4E)-4-(hydroxymethylene)-5-oxoazepane-1-carboxylate; tert-butyl (3E)-3-(hydroxymethylene)-4-oxoazepane-1-carboxylate; tert-butyl 3-cyano-2-thioxo-1,2,5,6,8,9-hexahydro-7H-pyrido[2,3-d]azepine-7-carboxylate; tert-butyl 3-cyano-2-thioxo-1,2,5,7,8,9-hexahydro-6H-pyrido[3,2-c]azepine-6-carboxylate; and 3-amino-7-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide; and 3-amino-6-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.

DEFINITIONS

In accordance with this detailed description, the following abbreviations and definitions apply. It must be noted that as used herein, the singular forms “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise.

The publications discussed herein are provided solely for their disclosure. Nothing herein is to be construed as an admission regarding antedating the publications. Further, the dates of publication provided may be different from the actual publications dates, which may need to be independently confirmed.

Where a range of values is provided, it is understood that each intervening value is encompassed. The upper and lower limits of these smaller ranges may independently be included in the smaller, subject to any specifically-excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either both of those included limits are also included in the invention. Also contemplated are any values that fall within the cited ranges.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Any methods and materials similar or equivalent to those described herein can also be used in practice or testing. All publications mentioned herein are incorporated herein by reference to disclose and describe the methods and/or materials in connection with which the publications are cited.

By “patient” or “subject” is meant to include any mammal. A “mammal”, for purposes of treatment, refers to any animal classified as a mammal, including but not limited to, humans, experimental animals including rats, mice, and guinea pigs, domestic and farm animals, and zoo, sports, or pet animals, such as dogs, horses, cats, cows, and the like.

The term “efficacy” as used herein refers to the effectiveness of a particular treatment regime. Efficacy can be measured based on change of the course of the disease in response to an agent.

The term “success” as used herein in the context of a chronic treatment regime refers to the effectiveness of a particular treatment regime. This includes a balance of efficacy, toxicity (e.g., side effects and patient tolerance of a formulation or dosage unit), patient compliance, and the like. For a chronic administration regime to be considered “successful” it must balance different aspects of patient care and efficacy to produce a favorable patient outcome.

The terms “treating”, “treatment”, and the like are used herein to refer to obtaining a desired pharmacological and physiological effect. The effect may be prophylactic in terms of preventing or partially preventing a disease, symptom, or condition thereof and/or may be therapeutic in terms of a partial or complete cure of a disease, condition, symptom, or adverse effect attributed to the disease. The term “treatment”, as used herein, covers any treatment of a disease in a mammal, such as a human, and includes: (a) preventing the disease from occurring in a subject which may be predisposed to the disease but has not yet been diagnosed as having it, i.e., causing the clinical symptoms of the disease not to develop in a subject that may be predisposed to the disease but does not yet experience or display symptoms of the disease; (b) inhibiting the disease, i.e., arresting or reducing the development of the disease or its clinical symptoms; and (c) relieving the disease, i.e., causing regression of the disease and/or its symptoms or condition. Treating a patient's suffering from disease related to a pathological inflammation is contemplated. Preventing, inhibiting, or relieving adverse effects attributed to pathological inflammation over long periods of time and/or are such caused by the physiological responses to inappropriate inflammation present in a biological system over long periods of time are also contemplated.

As used herein, “acyl” refers to the groups H—C(O)—, alkyl-C(O)—, substituted alkyl-C(O)—, alkenyl-C(O)—, substituted alkenyl-C(O)—, alkynyl-C(O)—, substituted alkynyl-C(O)—, cycloalkyl-C(O)—, substituted cycloalkyl-C(O)—, aryl-C(O)—, substituted aryl-C(O)—, heteroaryl-C(O)—, substituted heteroaryl-C(O)—, heterocyclic-C(O)—, and substituted heterocyclic-C(O)— wherein alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic are as defined herein.

“Alkylamino” refers to the group —NRR where each R is independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aryl, substituted aryl, cycloalkyl, substituted cycloalkyl, heteroaryl, substituted heteroaryl, heterocyclic, substituted heterocyclic and where each R is joined to form together with the nitrogen atom a heterocyclic or substituted heterocyclic ring wherein alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic are as defined herein.

“Alkenyl” refers to alkenyl group preferably having from 2 to 10 carbon atoms and more preferably 2 to 6 carbon atoms and having at least 1 and preferably from 1-2 sites of alkenyl unsaturation.

“Alkoxy” refers to the group “alkyl-O—” which includes, by way of example, methoxy, ethoxy, n-propoxy, iso-propoxy, n-butoxy, tert-butoxy, sec-butoxy, n-pentoxy, n-hexoxy, 1,2-dimethylbutoxy, and the like.

“Alkyl” refers to linear or branched alkyl groups having from 1 to 10 carbon atoms, alternatively 1 to 6 carbon atoms. This term is exemplified by groups such as methyl, t-butyl, n-heptyl, octyl and the like.

“Amino” refers to the group —NH₂.

“Aryl” or “Ar” refers to an unsaturated aromatic carbocyclic group of from 6 to 14 carbon atoms having a single ring (e.g., phenyl) or multiple condensed rings (e.g., naphthyl or anthryl) which condensed rings may or may not be aromatic (e.g., 2-benzoxazolinone, 2H-1,4-benzoxazin-3(4H)-one, and the like) provided that the point of attachment is through an aromatic ring atom.

“Substituted aryl” refers to aryl groups which are substituted with from 1 to 3 substituents selected from the group consisting of hydroxy, acyl, acylamino, thiocarbonylamino, acyloxy, alkyl, substituted alkyl, alkoxy, substituted alkoxy, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, amidino, alkylamidino, thioamidino, amino, aminoacyl, aminocarbonyloxy, aminocarbonylamino, aminothiocarbonylamino, aryl, substituted aryl, aryloxy, substituted aryloxy, cycloalkoxy, substituted cycloalkoxy, heteroaryloxy, substituted heteroaryloxy, heterocyclyloxy, substituted heterocyclyloxy, carboxyl, carboxylalkyl, carboxyl-substituted alkyl, carboxyl-cycloalkyl, carboxyl-substituted cycloalkyl, carboxylaryl, carboxyl-substituted aryl, carboxylheteroaryl, carboxyl-substituted heteroaryl, carboxylheterocyclic, carboxyl-substituted heterocyclic, carboxylamido, cyano, thiol, thioalkyl, substituted thioalkyl, thioaryl, substituted thioaryl, thioheteroaryl, substituted thioheteroaryl, thiocycloalkyl, substituted thiocycloalkyl, thioheterocyclic, substituted thioheterocyclic, cycloalkyl, substituted cycloalkyl, guanidino, guanidinosulfone, halo, nitro, heteroaryl, substituted heteroaryl, heterocyclic, substituted heterocyclic, cycloalkoxy, substituted cycloalkoxy, heteroaryloxy, substituted heteroaryloxy, heterocyclyloxy, substituted heterocyclyloxy, oxycarbonylamino, oxythiocarbonylamino, —S(O)₂-alkyl, —S(O)₂-substituted alkyl, —S(O)₂-cycloalkyl, —S(O)₂-substituted cycloalkyl, —S(O)₂-alkenyl, —S(O)₂-substituted alkenyl, —S(O)₂-aryl, —S(O)₂-substituted aryl, —S(O)₂-heteroaryl, —S(O)₂-substituted heteroaryl, —S(O)₂-heterocyclic, —S(O)₂-substituted heterocyclic, —OS(O)₂-alkyl, —OS(O)₂-substituted alkyl, —OS(O)₂-aryl, —OS(O)₂-substituted aryl, —OS(O)₂-heteroaryl, —OS(O)₂-substituted heteroaryl, —OS(O)₂-heterocyclic, —OS(O)₂-substituted heterocyclic, —OS(O)₂—NRR where R is hydrogen or alkyl, —NRS(O)₂-alkyl, —NRS(O)₂-substituted alkyl, —NRS(O)₂-aryl, —NRS(O)₂-substituted aryl, —NRS(O)₂-heteroaryl, —NRS(O)₂-substituted heteroaryl, —NRS(O)₂-heterocyclic, —NRS(O)₂-substituted heterocyclic, —NRS(O)₂—NR-alkyl, —NRS(O)₂—NR-substituted alkyl, —NRS(O)₂—NR-aryl, —NRS(O)₂—NR-substituted aryl, —NRS(O)₂—NR-heteroaryl, —NRS(O)₂—NR-substituted heteroaryl, —NRS(O)₂—NR-heterocyclic, —NRS(O)₂—NR-substituted heterocyclic where R is hydrogen or alkyl, mono- and di-alkylamino, mono- and di-(substituted alkyl)amino, mono- and di-arylamino, mono- and di-substituted arylamino, mono- and di-heteroarylamino, mono- and di-substituted heteroarylamino, mono- and di-heterocyclic amino, mono- and di-substituted heterocyclic amino, unsymmetric di-substituted amines having different substituents independently selected from the group consisting of alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic and amino groups on the substituted aryl blocked by conventional blocking groups such as Boc, Cbz, formyl, and the like or substituted with —SO₂NRR where R is hydrogen or alkyl.

“Cycloalkyl” refers to cyclic alkyl groups of from 3 to 8 carbon atoms having a single cyclic ring including, by way of example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclooctyl and the like. Excluded from this definition are multi-ring alkyl groups such as adamantanyl, etc.

“Halo” or “halogen” refers to fluoro, chloro, bromo and iodo.

“Heteroaryl” refers to an aromatic carbocyclic group of from 2 to 10 carbon atoms and 1 to 4 heteroatoms selected from the group consisting of oxygen, nitrogen and sulfur within the ring or oxides thereof. Such heteroaryl groups can have a single ring (e.g., pyridyl or furyl) or multiple condensed rings (e.g., indolizinyl or benzothienyl) wherein one or more of the condensed rings may or may not be aromatic provided that the point of attachment is through an aromatic ring atom. Additionally, the heteroatoms of the heteroaryl group may be oxidized, i.e., to form pyridine N-oxides or 1,1-dioxo-1,2,5-thiadiazoles and the like. Additionally, the carbon atoms of the ring may be substituted with an oxo (═O). The term “heteroaryl having two nitrogen atoms in the heteroaryl, ring” refers to a heteroaryl group having two, and only two, nitrogen atoms in the heteroaryl ring and optionally containing 1 or 2 other heteroatoms in the heteroaryl ring, such as oxygen or sulfur.

“Substituted heteroaryl” refers to heteroaryl groups which are substituted with from 1 to 3 substituents selected from the group consisting of hydroxy, acyl, acylamino, thiocarbonylamino, acyloxy, alkyl, substituted alkyl, alkoxy, substituted alkoxy, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, amidino, alkylamidino, thioamidino, amino, aminoacyl, aminocarbonyloxy, aminocarbonylamino, aminothiocarbonylamino, aryl, substituted aryl, aryloxy, substituted aryloxy, cycloalkoxy, substituted cycloalkoxy, heteroaryloxy, substituted heteroaryloxy, heterocyclyloxy, substituted heterocyclyloxy, carboxyl, carboxylalkyl, carboxyl-substituted alkyl, carboxyl-cycloalkyl, carboxyl-substituted cycloalkyl, carboxylaryl, carboxyl-substituted aryl, carboxylheteroaryl, carboxyl-substituted heteroaryl, carboxylheterocyclic, carboxyl-substituted heterocyclic, carboxylamido, cyano, thiol, thioalkyl, substituted thioalkyl, thioaryl, substituted thioaryl, thioheteroaryl, substituted thioheteroaryl, thiocycloalkyl, substituted thiocycloalkyl, thioheterocyclic, substituted thioheterocyclic, cycloalkyl, substituted cycloalkyl, guanidino, guanidinosulfone, halo, nitro, heteroaryl, substituted heteroaryl, heterocyclic, substituted heterocyclic, cycloalkoxy, substituted cycloalkoxy, heteroaryloxy, substituted heteroaryloxy, heterocyclyloxy, substituted heterocyclyloxy, oxycarbonylamino, oxythiocarbonylamino, —S(O)₂-alkyl, —S(O)₂-substituted alkyl, —S(O)₂-cycloalkyl, —S(O)₂-substituted cycloalkyl, —S(O)₂-alkenyl, —S(O)₂-substituted alkenyl, —S(O)₂-aryl, —S(O)₂-substituted aryl, —S(O)₂-heteroaryl, —S(O)₂-substituted heteroaryl, —S(O)₂-heterocyclic, —S(O)₂-substituted heterocyclic, —OS(O)₂-alkyl, —OS(O)₂-substituted alkyl, —OS(O)₂-aryl, —OS(O)₂-substituted aryl, —OS(O)₂-heteroaryl, —OS(O)₂-substituted heteroaryl, —OS(O)₂-heterocyclic, —OS(O)₂-substituted heterocyclic, —OSO₂—NRR where R is hydrogen or alkyl, —NRS(O)₂-alkyl, —NRS(O)₂-substituted alkyl, —NRS(O)₂-aryl, —NRS(O)₂-substituted aryl, —NRS(O)₂-heteroaryl, —NRS(O)₂-substituted heteroaryl, —NRS(O)₂-heterocyclic, —NRS(O)₂-substituted heterocyclic, —NRS(O)₂—NR-alkyl, —NRS(O)₂—NR-substituted alkyl, —NRS(O)₂—NR-aryl, —NRS(O)₂—NR-substituted aryl, —NRS(O)₂—NR-heteroaryl, —NRS(O)₂—NR-substituted heteroaryl, —NRS(O)₂—NR-heterocyclic, —NRS(O)₂—NR-substituted heterocyclic where R is hydrogen or alkyl, mono- and di-alkylamino, mono- and di-(substituted alkyl)amino, mono- and di-arylamino, mono- and di-substituted arylamino, mono- and di-heteroarylamino, mono- and di-substituted heteroarylamino, mono- and di-heterocyclic amino, mono- and di-substituted heterocyclic amino, unsymmetric di-substituted amines having different substituents independently selected from the group consisting of alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic and amino groups on the substituted aryl blocked by conventional blocking groups such as Boc, Cbz, formyl, and the like or substituted with —SO₂NRR where R is hydrogen or alkyl.

“Sulfonyl” refers to the group —S(O)₂R where R is selected from the group consisting of hydrogen, alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, aryl, substituted aryl, cycloalkyl, substituted cycloalkyl, heteroaryl, substituted heteroaryl, heterocyclic, substituted heterocyclic wherein alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic are as defined herein.

“Optionally substituted” means that the recited group may be unsubstituted or the recited group may be substituted.

“Pharmaceutically-acceptable carrier” means a carrier that is useful in preparing a pharmaceutical composition or formulation that is generally safe, non-toxic, and neither biologically nor otherwise undesirable, and includes a carrier that is acceptable for veterinary use as well as human pharmaceutical use.

“Pharmaceutically-acceptable cation” refers to the cation of a pharmaceutically-acceptable salt.

“Pharmaceutically-acceptable salt” refers to salts which retain the biological effectiveness and properties of compounds which are not biologically or otherwise undesirable. Pharmaceutically-acceptable salts refer to pharmaceutically-acceptable salts of the compounds, which salts are derived from a variety of organic and inorganic counter ions well known in the art and include, by way of example only, sodium, potassium, calcium, magnesium, ammonium, tetraalkylammonium, and the like; and when the molecule contains a basic functionality, salts of organic or inorganic acids, such as hydrochloride, hydrobromide, tartrate, mesylate, acetate, maleate, oxalate and the like.

Pharmaceutically-acceptable base addition salts can be prepared from inorganic and organic bases. Salts derived from inorganic bases include, by way of example only, sodium, potassium, lithium, ammonium, calcium and magnesium salts. Salts derived from organic bases include, but are not limited to, salts of primary, secondary and tertiary amines, such as alkyl amines, dialkyl amines, trialkyl amines, substituted alkyl amines, di(substituted alkyl) amines, tri(substituted alkyl) amines, alkenyl amines, dialkenyl amines, trialkenyl amines, substituted alkenyl amines, di(substituted alkenyl) amines, tri(substituted alkenyl) amines, cycloalkyl amines, di(cycloalkyl) amines, tri(cycloalkyl) amines, substituted cycloalkyl amines, disubstituted cycloalkyl amine, trisubstituted cycloalkyl amines, cycloalkenyl amines, di(cycloalkenyl) amines, tri(cycloalkenyl) amines, substituted cycloalkenyl amines, disubstituted cycloalkenyl amine, trisubstituted cycloalkenyl amines, aryl amines, diaryl amines, triaryl amines, heteroaryl amines, diheteroaryl amines, triheteroaryl amines, heterocyclic amines, diheterocyclic amines, triheterocyclic amines, mixed di- and tri-amines where at least two of the substituents on the amine are different and are selected from the group consisting of alkyl, substituted alkyl, alkenyl, substituted alkenyl, cycloalkyl, substituted cycloalkyl, cycloalkenyl, substituted cycloalkenyl, aryl, heteroaryl, heterocyclic, and the like. Also included are amines where the two or three substituents, together with the amino nitrogen, form a heterocyclic or heteroaryl group.

Examples of suitable amines include, by way of example only, isopropylamine, trimethyl amine, diethyl amine, tri(isopropyl) amine, tri(n-propyl) amine, ethanolamine, 2-dimethylaminoethanol, tromethamine, lysine, arginine, histidine, caffeine, procaine, hydrabamine, choline, betaine, ethylenediamine, glucosamine, N-alkylglucamines, theobromine, purines, piperazine, piperidine, morpholine, N-ethylpiperidine, and the like. It should also be understood that other carboxylic acid derivatives would be useful, for example, carboxylic acid amides, including carboxamides, lower alkyl carboxamides, dialkyl carboxamides, and the like.

Pharmaceutically-acceptable acid addition salts may be prepared from inorganic and organic acids. Salts derived from inorganic acids include hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, and the like. Salts derived from organic acids include acetic acid, propionic acid, glycolic acid, pyruvic acid, oxalic acid, malic acid, malonic acid, succinic acid, maleic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, cinnamic acid, mandelic acid, methanesulfonic acid, ethanesulfonic acid, p-toluene-sulfonic acid, salicylic acid, and the like.

A compound may act as a pro-drug. Pro-drug means any compound which releases an active parent drug in vivo when such pro-drug is administered to a mammalian subject. Pro-drugs are prepared by modifying functional groups present in such a way that the modifications may be cleaved in vivo to release the parent compound. Pro-drugs include compounds wherein a hydroxy, amino, or sulfhydryl group is bonded to any group that may be cleaved in vivo to regenerate the free hydroxyl, amino, or sulfhydryl group, respectively. Examples of pro-drugs include, but are not limited to esters (e.g., acetate, formate, and benzoate derivatives), carbamates (e.g., N,N-dimethylamino-carbonyl) of hydroxy functional groups, and the like.

“Treating” or “treatment” of a disease includes:

(1) preventing the disease, i.e. causing the clinical symptoms of the disease not to develop in a mammal that may be exposed to or predisposed to the disease but does not yet experience or display symptoms of the disease,

(2) inhibiting the disease, i.e., arresting or reducing the development of the disease or its clinical symptoms, or

(3) relieving the disease, i.e., causing regression of the disease or its clinical symptoms.

A “therapeutically-effective amount” means the amount of a compound that, when administered to a mammal for treating a disease, is sufficient to effect such treatment for the disease. The “therapeutically-effective amount” will vary depending on the compound, the disease, and its severity and the age, weight, etc., of the mammal to be treated.

Pharmaceutical Formulations of the Compounds

In general, compounds will be administered in a therapeutically-effective amount by any of the accepted modes of administration for these compounds. The compounds can be administered by a variety of routes, including, but not limited to, oral, parenteral (e.g., subcutaneous, subdural, intravenous, intramuscular, intrathecal, intraperitoneal, intracerebral, intraarterial, or intralesional routes of administration), topical, intranasal, localized (e.g., surgical application or surgical suppository), rectal, and pulmonary (e.g., aerosols, inhalation, or powder). Accordingly, these compounds are effective as both injectable and oral compositions. The compounds can be administered continuously by infusion or by bolus injection.

The actual amount of the compound, i.e., the active ingredient, will depend on a number of factors, such as the severity of the disease, i.e., the condition or disease to be treated, age, and relative health of the subject, the potency of the compound used, the route and form of administration, and other factors.

Toxicity and therapeutic efficacy of such compounds can be determined by standard pharmaceutical procedures in cell cultures or experimental animals, e.g., for determining the LD₅₀ (the dose lethal to 50% of the population) and the ED₅₀ (the dose therapeutically effective in 50% of the population). The dose ratio between toxic and therapeutic effects is the therapeutic index and it can be expressed as the ratio LD₅₀/ED₅₀.

The data obtained from the cell culture assays and animal studies can be used in formulating a range of dosage for use in humans. The dosage of such compounds lies within a range of circulating concentrations that include the ED₅₀ with little or no toxicity. The dosage may vary within this range depending upon the dosage form employed and the route of administration utilized. For any compound used, the therapeutically-effective dose can be estimated initially from cell culture assays. A dose may be formulated in animal models to achieve a circulating plasma concentration range which includes the IC₅₀ (i.e., the concentration of the test compound which achieves a half-maximal inhibition of symptoms) as determined in cell culture. Such information can be used to more accurately determine useful doses in humans. Levels in plasma may be measured, for example, by high performance liquid chromatography.

The amount of the pharmaceutical composition administered to the patient will vary depending upon what is being administered, the purpose of the administration, such as prophylaxis or therapy, the state of the patient, the manner of administration, and the like. In therapeutic applications, compositions are administered to a patient already suffering from a disease in an amount sufficient to cure or at least partially arrest the symptoms of the disease and its complications. An amount adequate to accomplish this is defined as “therapeutically-effective dose.” Amounts effective for this use will depend on the disease condition being treated as well as by the judgment of the attending clinician depending upon factors such as the severity of the inflammation, the age, weight, and general condition of the patient, and the like.

The compositions administered to a patient are in the form of pharmaceutical compositions described supra. These compositions may be sterilized by conventional sterilization techniques, or may be sterile filtered. The resulting aqueous solutions may be packaged for use as is, or lyophilized, the lyophilized preparation being combined with a sterile aqueous carrier prior to administration. It will be understood that use of certain of the foregoing excipients, carriers, or stabilizers will result in the formation of pharmaceutical salts.

The active compound is effective over a wide dosage range and is generally administered in a pharmaceutically- or therapeutically-effective amount. The therapeutic dosage of the compounds will vary according to, for example, the particular use for which the treatment is made, the manner of administration of the compound, the health and condition of the patient, and the judgment of the prescribing physician. For example, for intravenous administration, the dose will typically be in the range of about 0.5 mg to about 100 mg per kilogram body weight. Effective doses can be extrapolated from dose-response curves derived from in vitro or animal model test systems. Typically, the clinician will administer the compound until a dosage is reached that achieves the desired effect.

When employed as pharmaceuticals, the compounds are usually administered in the form of pharmaceutical compositions. Pharmaceutical compositions contain as the active ingredient one or more of the compounds above, associated with one or more pharmaceutically-acceptable carriers or excipients. The excipient employed is typically one suitable for administration to human subjects or other mammals. In making the compositions, the active ingredient is usually mixed with an excipient, diluted by an excipient, or enclosed within a carrier which can be in the form of a capsule, sachet, paper or other container. When the excipient serves as a diluent, it can be a solid, semi-solid, or liquid material, which acts as a vehicle, carrier, or medium for the active ingredient. Thus, the compositions can be in the form of tablets, pills, powders, lozenges, sachets, cachets, elixirs, suspensions, emulsions, solutions, syrups, aerosols (as a solid or in a liquid medium), ointments containing, for example, up to 10% by weight of the active compound, soft and hard gelatin capsules, suppositories, sterile injectable solutions, and sterile packaged powders.

In preparing a formulation, it may be necessary to mill the active compound to provide the appropriate particle size prior to combining with the other ingredients. If the active compound is substantially insoluble, it ordinarily is milled to a particle size of less than 200 mesh. If the active compound is substantially water soluble, the particle size is normally adjusted by milling to provide a substantially uniform distribution in the formulation, e.g., about 40 mesh.

Some examples of suitable excipients include lactose, dextrose, sucrose, sorbitol, mannitol, starches, gum acacia, calcium phosphate, alginates, tragacanth, gelatin, calcium silicate, microcrystalline cellulose, polyvinylpyrrolidone, cellulose, sterile water, syrup, and methyl cellulose. The formulations can additionally include: lubricating agents such as talc, magnesium stearate, and mineral oil; wetting agents; emulsifying and suspending agents; preserving agents such as methyl- and propylhydroxy-benzoates; sweetening agents; and flavoring agents. The compositions of the invention can be formulated so as to provide quick, sustained, or delayed-release of the active ingredient after administration to the patient by employing procedures known in the art.

The quantity of active compound in the pharmaceutical composition and unit dosage form thereof may be varied or adjusted widely depending upon the particular application, the manner or introduction, the potency of the particular compound, and the desired concentration. The term “unit dosage forms” refers to physically-discrete units suitable as unitary dosages for human subjects and other mammals, each unit containing a predetermined quantity of active material calculated to produce the desired therapeutic effect, in association with a suitable pharmaceutical excipient.

The compound can be formulated for parenteral administration in a suitable inert carrier, such as a sterile physiological saline solution. The dose administered will be determined by route of administration.

Administration of therapeutic agents by intravenous formulation is well known in the pharmaceutical industry. An intravenous formulation should possess certain qualities aside from being just a composition in which the therapeutic agent is soluble. For example, the formulation should promote the overall stability of the active ingredient(s), also, the manufacture of the formulation should be cost-effective. All of these factors ultimately determine the overall success and usefulness of an intravenous formulation.

Other accessory additives that may be included in pharmaceutical formulations and compounds as follow: solvents: ethanol, glycerol, propylene glycol; stabilizers: EDTA (ethylene diamine tetraacetic acid), citric acid; antimicrobial preservatives: benzyl alcohol, methyl paraben, propyl paraben; buffering agents: citric acid/sodium citrate, potassium hydrogen tartrate, sodium hydrogen tartrate, acetic acid/sodium acetate, maleic acid/sodium maleate, sodium hydrogen phthalate, phosphoric acid/potassium dihydrogen phosphate, phosphoric acid/disodium hydrogen phosphate; and tonicity modifiers: sodium chloride, mannitol, dextrose.

The presence of a buffer is necessary to maintain the aqueous pH in the range of from about 4 to about 8. The buffer system is generally a mixture of a weak acid and a soluble salt thereof, e.g., sodium citrate/citric acid; or the monocation or dication salt of a dibasic acid, e.g., potassium hydrogen tartrate; sodium hydrogen tartrate, phosphoric acid/potassium dihydrogen phosphate, and phosphoric acid/disodium hydrogen phosphate.

The amount of buffer system used is dependent on (1) the desired pH; and (2) the amount of drug. Generally, the amount of buffer used is able to maintain a formulation pH in the range of 4 to 8. Generally, a 1:1 to 10:1 mole ratio of buffer (where the moles of buffer are taken as the combined moles of the buffer ingredients, e.g., sodium citrate and citric acid) to drug is used.

A useful buffer is sodium citrate/citric acid in the range of 5 to 50 mg per ml. sodium citrate to 1 to 15 mg per ml. citric acid, sufficient to maintain an aqueous pH of 4-6 of the composition.

The buffer agent may also be present to prevent the precipitation of the drug through soluble metal complex formation with dissolved metal ions, e.g., Ca, Mg, Fe, Al, Ba, which may leach out of glass containers or rubber stoppers or be present in ordinary tap water. The agent may act as a competitive complexing agent with the drug and produce a soluble metal complex leading to the presence of undesirable particulates.

In addition, the presence of an agent, e.g., sodium chloride in an amount of about of 1-8 mg/ml, to adjust the tonicity to the same value of human blood may be required to avoid the swelling or shrinkage of erythrocytes upon administration of the intravenous formulation leading to undesirable side effects such as nausea or diarrhea and possibly to associated blood disorders. In general, the tonicity of the formulation matches that of human blood which is in the range of 282 to 288 mOsm/kg, and in general is 285 mOsm/kg, which is equivalent to the osmotic pressure corresponding to a 0.9% solution of sodium chloride.

An intravenous formulation can be administered by direct intravenous injection, i.v. bolus, or can be administered by infusion by addition to an appropriate infusion solution such as 0.9% sodium chloride injection or other compatible infusion solution.

The compositions are preferably formulated in a unit dosage form, each dosage containing from about 5 to about 100 mg, more usually about 10 to about 30 mg, of the active ingredient. The term “unit dosage forms” refers to physically discrete units suitable as unitary dosages for human subjects and other mammals, each unit containing a predetermined quantity of active material calculated to produce the desired therapeutic effect, in association with a suitable pharmaceutical excipient.

The active compound is effective over a wide dosage range and is generally administered in a pharmaceutically effective amount. It will be understood, however, that the amount of the compound actually administered will be determined by a physician, in the light of the relevant circumstances, including the condition to be treated, the chosen route of administration, the actual compound administered, the age, weight, and response of the individual patient, the severity of the patient's symptoms, and the like.

For preparing solid compositions such as tablets, the principal active ingredient is mixed with a pharmaceutical excipient to form a solid preformulation composition containing a homogeneous mixture of a compound of the present invention. When referring to these preformulation compositions as homogeneous, it is meant that the active ingredient is dispersed evenly throughout the composition so that the composition may be readily subdivided into equally effective unit dosage forms such as tablets, pills and capsules. This solid preformulation is then subdivided into unit dosage forms of the type described above containing from, for example, 0.1 to about 2000 mg of the active ingredient.

The tablets or pills may be coated or otherwise compounded to provide a dosage form affording the advantage of prolonged action. For example, the tablet or pill can comprise an inner dosage and an outer dosage component, the latter being in the form of an envelope over the former. The two components can be separated by an enteric layer which serves to resist disintegration in the stomach and permit the inner component to pass intact into the duodenum or to be delayed in release. A variety of materials can be used for such enteric layers or coatings, such materials including a number of polymeric acids and mixtures of polymeric acids with such materials as shellac, cetyl alcohol, and cellulose acetate.

The liquid forms in which the novel compositions may be incorporated for administration orally or by injection include aqueous solutions, suitably flavored syrups, aqueous or oil suspensions, and flavored emulsions with edible oils such as cottonseed oil, sesame oil, coconut oil, or peanut oil, as well as elixirs and similar pharmaceutical vehicles.

Compositions for inhalation or insufflation include solutions and suspensions in pharmaceutically-acceptable, aqueous or organic solvents, or mixtures thereof, and powders. The liquid or solid compositions may contain suitable pharmaceutically-acceptable excipients as described supra. Compositions in pharmaceutically-acceptable solvents may be nebulized by use of inert gases. Nebulized solutions may be breathed directly from the nebulizing device or the nebulizing device may be attached to a face masks tent, or intermittent positive pressure breathing machine. Solution, suspension, or powder compositions may be administered from devices which deliver the formulation in an appropriate manner.

The compounds can be administered in a sustained release form. Suitable examples of sustained-release preparations include semipermeable matrices of solid hydrophobic polymers containing the compounds, which matrices are in the form of shaped articles, e.g., films, or microcapsules. Examples of sustained-release matrices include polyesters, hydrogels (e.g., poly(2-hydroxyethyl-methacrylate) as described by Langer et al., J. Biomed. Mater. Res. 15: 167-277 (1981) and Langer, Chem. Tech. 12: 98-105 (1982) or poly(vinyl alcohol)), polylactides (U.S. Pat. No. 3,773,919), copolymers of L-glutamic acid and gamma ethyl-L-glutamate (Sidman et al., Biopolymers 22: 547-556, 1983), non-degradable ethylene-vinyl acetate (Langer et al., supra), degradable lactic acid-glycolic acid copolymers such as the LUPRON DEPOT™ (i.e., injectable microspheres composed of lactic acid-glycolic acid copolymer and leuprolide acetate), and poly-D-(−)-3-hydroxybutyric acid (EP 133,988).

The compounds can be administered in a sustained-release form, for example a depot injection, implant preparation, or osmotic pump, which can be formulated in such a manner as to permit a sustained-release of the active ingredient. Implants for sustained-release formulations are well-known in the art. Implants may be formulated as, including but not limited to, microspheres, slabs, with biodegradable or non-biodegradable polymers. For example, polymers of lactic acid and/or glycolic acid form an erodible polymer that is well-tolerated by the host.

Transdermal delivery devices (“patches”) may also be employed. Such transdermal patches may be used to provide continuous or discontinuous infusion of the compounds in controlled amounts. The construction and use of transdermal patches for the delivery of pharmaceutical agents is well known in the art. See, e.g., U.S. Pat. No. 5,023,252, issued Jun. 11, 1991, herein incorporated by reference. Such patches may be constructed for continuous, pulsatile, or on-demand delivery of pharmaceutical agents.

Direct or indirect placement techniques may be used when it is desirable or necessary to introduce the pharmaceutical composition to the brain. Direct techniques usually involve placement of a drug delivery catheter into the host's ventricular system to bypass the blood-brain barrier. One such implantable delivery system used for the transport of biological factors to specific anatomical regions of the body is described in U.S. Pat. No. 5,011,472, which is herein incorporated by reference.

Indirect techniques usually involve formulating the compositions to provide for drug latentiation by the conversion of hydrophilic drugs into lipid-soluble drugs. Latentiation is generally achieved through blocking of the hydroxy, carbonyl, sulfate, and primary amine groups present on the drug to render the drug more lipid-soluble and amenable to transportation across the blood-brain barrier. Alternatively, the delivery of hydrophilic drugs may be enhanced by intra-arterial infusion of hypertonic solutions which can transiently open the blood-brain barrier.

In order to enhance serum half-life, the compounds may be encapsulated, introduced into the lumen of liposomes, prepared as a colloid, or other conventional techniques may be employed which provide an extended serum half-life of the compounds. A variety of methods are available for preparing liposomes, as described in, e.g., Szoka et al., U.S. Pat. Nos. 4,235,871, 4,501,728 and 4,837,028 each of which is incorporated herein by reference.

Pharmaceutical compositions are suitable for use in a variety of drug delivery systems. Suitable formulations for use in the present invention are found in Remington's Pharmaceutical Sciences, Mace Publishing Company, Philadelphia, Pa., 17th ed. (1985).

In the examples below, if an abbreviation is not defined above, it has its generally accepted meaning. Further, all temperatures are in degrees Celsius (unless otherwise indicated). The following Methods were used to prepare the compounds set forth below as indicated.

Example 1 Formulation 1

Hard gelatin capsules containing the following ingredients are prepared:

Quantity Ingredient (mg/capsule) Active Ingredient 30.0 Starch 305.0 Magnesium stearate 5.0

The above ingredients are mixed and filled into hard gelatin capsules in 340 mg quantities.

Example 2 Formulation 2

A tablet formula is prepared using the ingredients below:

Quantity Ingredient (mg/capsule) Active Ingredient 25.0 Cellulose, microcrystalline 200.0 Colloidal silicon dioxide 10.0 Stearic acid 5.0

The components are blended and compressed to form tablets, each weighing 240 mg.

Example 3 Formulation 3

A dry powder inhaler formulation is prepared containing the following components:

Ingredient Weight % Active Ingredient 5 Lactose 95

The active mixture is mixed with the lactose and the mixture is added to a dry powder inhaling appliance.

Example 4 Formulation 4

Tablets, each containing 30 mg of active ingredient, are prepared as follows:

Quantity Ingredient (mg/capsule) Active Ingredient 30.0 mg Starch 45.0 mg Microcrystalline cellulose 35.0 mg Polyvinylpyrrolidone 4.0 mg (as 10% solution in water) Sodium Carboxymethyl starch 4.5 mg Magnesium stearate 0.5 mg Talc 1.0 mg Total 120 mg

The active ingredient, starch, and cellulose are passed through a No. 20 mesh U.S. sieve and mixed thoroughly. The solution of polyvinyl-pyrrolidone is mixed with the resultant powders, which are then passed through a 16 mesh U.S. sieve. The granules so produced are dried at 50° to 60° C. and passed through a 16 mesh U.S. sieve. The sodium carboxymethyl starch, magnesium stearate, and talc, previously passed through a No. 30 mesh U.S. sieve, are then added to the granules, which after mixing, are compressed on a tablet machine to yield tablets each weighing 150 mg.

Example 5 Formulation 5

Capsules, each containing 40 mg of medicament, are made as follows:

Quantity Ingredient (mg/capsule) Active Ingredient 40.0 mg Starch 109.0 mg Magnesium stearate 1.0 mg Total 150.0 mg

The active ingredient, cellulose, starch, an magnesium stearate are blended, passed through a No. 20 mesh U.S. sieve, and filled into hard gelatin capsules in 150 mg quantities.

Example 6 Formulation 6

Suppositories, each containing 25 mg of active ingredient, are made as follows:

Ingredient Amount Active Ingredient 25 mg Saturated fatty acids glycerides to 2,000 mg

The active ingredient is passed through a No. 60 mesh U.S. sieve and suspended in the saturated fatty acid glycerides previously melted using the minimum heat necessary. The mixture is then poured into a suppository mold of nominal 2.0 g capacity and allowed to cool.

Example 7 Formulation 7

Suspensions, each containing 50 mg of medicament per 5.0 ml dose, are made as follows:

Ingredient Amount Active Ingredient 50.0 mg Xanthan gum 4.0 mg Sodium carboxymethyl cellose (11%) 500 mg Microcrystalline cellulose (89%) Sucrose 1.75 g Sodium benzoate 10.0 mg Flavor and color q.v. Purified water to 5.0 ml

The medicament, sucrose, and xanthan gum are blended, passed through a NO. 10 mesh U.S. sieve, and then mixed with a previously made solution of the microcrystalline cellulose and sodium carboxymethyl cellulose in water. The sodium benzoate, flavor, and color are diluted with some of the water and added with stirring. Sufficient water is then added to produce the required volume.

Example 8 Formulation 8

Hard gelatin tablets, each containing 15 mg of active ingredient, are made as follows:

Quantity Ingredient (mg/capsule) Active Ingredient 15.0 mg Starch 407.0 mg Magnesium stearate 3.0 mg Total 425.0 mg

The active ingredient, cellulose, starch, and magnesium stearate are blended, passed through a No. 20 mesh U.S. sieve, and filled into hard gelatin capsules in 560 mg quantities.

Example 9 Formulation 9

An intravenous formulation may be prepared as follows:

Ingredient (mg/capsule) Active Ingredient 250.0 mg Isotonic saline 1000 ml

Therapeutic compound compositions generally are placed into a container having a sterile access port, for example, an intravenous solution bag or vial having a stopper pierceable by a hypodermic injection needle or similar sharp instrument.

Example 10 Formulation 10

A topical formulation may be prepared as follows:

Ingredient Quantity Active Ingredient 1-10 g Emulsifying Wax 30 g Liquid Paraffin 20 g White Soft Paraffin to 100 g

The white soft paraffin is heated until molten. The liquid paraffin and emulsifying wax are incorporated and stirred until dissolved. The active ingredient is added and stirring is continued until dispersed. The mixture is then cooled until solid.

Example 11 Formulation 11

An aerosol formulation may be prepared as follows: A solution of the candidate compound in 0.5% sodium bicarbonate/saline (w/v) at a concentration of 30.0 mg/mL is prepared using the following procedure:

Preparation of 0.5% Sodium Bicarbonate/Saline Stock Solution: 100.0 mL

Ingredient Gram/100.0 mL Final Concentration Sodium Bicarbonate 0.5 g 0.5% Saline q.s. ad 100.0 mL q.s. ad 100%

Procedure:

1. Add 0.5 g sodium bicarbonate into a 100 mL volumetric flask.

2. Add approximately 90.0 mL saline and sonicate until dissolved.

3. Q.S. to 100.0 mL with saline and mix thoroughly.

Preparation of 30.0 mg/mL Candidate Compound: 10.0 mL

Ingredient Gram/10.0 mL Final Concentration Candidate Compound 0.300 g 30.0 mg/mL .05% Sodium Bicarbonate/ q.s. ad 10.0 mL q.s ad 100% Saline Stock Solution

Procedure:

1. Add 0.300 g of the candidate compound into a 10.0 mL volumetric flask.

2. Add approximately 9.7 mL of 0.5% sodium bicarbonate/saline stock solution.

3. Sonicate until the candidate compound is completely dissolved.

4. Q.S. to 10.0 mL with 0.5% sodium bicarbonate/saline stock solution and mix.

Example 12 Development of a High-Throughput Screening Assay for Measurement of Dengue Virus-Induced Cytopathic Effect

A sensitive and reproducible high-throughput screening (HTS) assay has been established to measure dengue virus-induced cytopathic effect (CPE). To determine the amount of dengue virus stock required to produce complete CPE in 5 days, Vero cell monolayers were seeded on 96-well plates and infected with 10-fold serial dilutions of the dengue virus stock representing a multiplicity of infection (MOI) of approximately 0.001 PFU/cell to 0.1 PFU/cell. At 5 days post-infection, the cultures were fixed with 5% glutaraldehyde and stained with 0.1% crystal violet. Virus-induced CPE was quantified spectrophotometrically at OD₅₇₀. From this analysis, an MOI of 0.1 PFU/cell of dengue virus stock was chosen for use in the HTS assay. To establish the signal-to-noise ratio (S/N) of the 96-well assay and evaluate the well-to-well and assay-to-assay variability, five independent experiments were performed. Vero cell monolayers were infected with 0.1 PFU/cell of dengue virus stock. Each plate contained the following controls: quadruplicate virus-infected wells, quadruplicate uninfected cell wells and a dose response curve in duplicate for ribavirin at 500, 250, 125 and 62 μM, as reference standards. At day 5 post-infection, the plates were processed as described above.

The dengue virus CPE assay was used to evaluate compounds from the SIGA chemical library for those that inhibit dengue virus-induced CPE. Each evaluation run consisted of 48 96-well plates with 80 compounds per plate to generate 4,608 data points per run. At this throughput we are capable of evaluating 200,000 compounds in about 52 weeks. Compounds were dissolved in DMSO and diluted in medium such that the final concentration in each well was 5 μM compound and 0.5% DMSO. The compounds were added robotically to the culture medium using the PerkinElmer MultiPROBE® II HT PLUS robotic system. Following compound addition, cultures were infected with dengue virus (DEN-2 strain New Guinea C). After 5 days incubation, plates were processed and CPE quantified on a PerkinElmer EnVision II plate reader system.

The results of these experiments indicated that the 96-well assay format is robust and reproducible. The S/N ratio (ratio of signal of cell control wells (signal) to virus control wells (noise)) was 5.0±1.2. The well-to-well variability was determined for each individual plate and found to have a coefficient of variance of less than 10% for both positive control and negative control wells, and overall assay-to-assay variability was less than 15%. Using this assay, the EC₅₀ values for ribavirin were determined to be 125±25 μM, respectively. The effectiveness of ribavirin against dengue varies with the cell type used, but the values we obtained were within the range of published values for this compound (2, 13, 28). Taken together, these results show that a sensitive and reproducible HTS assay has been successfully developed to evaluate our compound library for inhibitors of dengue virus replication.

Example 13 Determining Anti-Dengue-2 Activity of Compounds of the Invention

The assay described in Example 12 was the basis of a high-throughput screen for dengue virus inhibitors, against which a library of 210,000 compounds was tested. Compounds that inhibited dengue virus induced CPE by at least 50% were further investigated for chemical tractability, potency, and selectivity.

Initially, the chemical structures of the hit compounds were examined for chemical tractability. A chemically tractable compound is defined as one that is synthetically accessible using reasonable chemical methodology, and which possesses chemically stable functionalities and potential drug-like qualities. Hits that passed this medicinal chemistry filter were evaluated for their potency. Compound potency was determined by evaluating inhibitory activity across a broad range of concentrations. Nonlinear regression was used to generate best-fit inhibition curves and to calculate the 50% effective concentration (EC₅₀). The selectivity or specificity of a given compound is typically expressed as a ratio of its cytotoxicity to its biological effect. A cell proliferation assay is used to calculate a 50% cytotoxicity concentration (CC₅₀); the ratio of this value to the EC₅₀ is referred to as the therapeutic index (T.I.=CC₅₀/EC₅₀). Two types of assays have been used to determine cytotoxicity, both of which are standard methods for quantitating the reductase activity produced in metabolically active cells (22). One is a colorimetric method that measures the reduction of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT), and the other uses fluorimetry to measure the reduction of resazurin (Alamar Blue). Selectivity could be further characterized by assessing the inhibitory action against viruses from unrelated virus families. Sixteen quality dengue hits were discovered in the pool of initial hits from the HTS screening, all with EC₅₀ values below 25 μM. Verification that these compounds act against each of the four serotypes of dengue was done with yield assays carried out at several drug concentrations, and the titer determined for each.

Compounds that were active in the primary screen were tested for activity in viral yield assays. Table 1 shows some of the compounds that were tested for activity against Dengue-2 (Strain New Guinea C) in a viral yield assay at a range of concentrations. Vero cells in 12-well plates were infected with dengue-2 virus at a multiplicity of infection (MOI) of 0.1, treated with compound (or DMSO as a control), incubated at 37° C., harvested 48 hours post infection and titered on Vero cells as described above. The EC₅₀ was calculated through ExcelFit. Activities against other serotypes of dengue virus were determined in a similar way.

Compound 1 was identified as one of the most potent and selective compounds from within the pool of the initial quality hits, with activity against all four serotypes of dengue. Chemical analogs of this compound were obtained, and these analogs were tested as described in order to define the relationship between chemical structure and biological activity (see Table 1). All of the compounds in Table 1, labeled A or B, are active against dengue with EC₅₀ values at or below 25 μM.

TABLE 1 Compounds active against Dengue-2 Virus in Vero cells Activity A: EC₅₀ ≦5 uM; B: 5< EC₅₀ ≦25 uM; Com- C: EC₅₀ pound Chemical Structure Molecular Formula Chemical Name >25 uM 1

C21 H19 N5 O S2 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid (5-phenyl- [1,3,4]thiadiazol-2-yl)-amide A 2

C18 H12 F N3 O S2 3-Amino-4-(4-fluoro-phenyl)-6- thiophen-2-yl-thieno[2,3- b]pyridine-2-carboxylic acid amide A 3

C19 H12 F3 N3 O S2 3-Amino-6-thiophen-2-yl- thieno[2,3-b]pyridine-2- carboxylic acid (3- trifluoromethyl-phenyl)-amide A 4

C17 H18 N4 O S2 1-Amino-5-methyl-6,7,8,9- tetrahydro-thieno[2,3- b]isoquinoline-2-carboxylic acid (4-methyl-thiazol-2-yl)- amide A 5

C21 H12 F3 N5 O S3 3-Amino-6-thiophen-2-yl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2- yl)-amide A 6

C19 H12 Br N5 O2 S 3,6-Diamino-5-cyano-4-furan- 2-yl-thieno[2,3-b]pyridine-2- carboxylic acid (4-bromo- phenyl)-amide A 7

C18 H17 N3 O2 S 3-Amino-6-cyclopropyl-4-(4- methoxy-phenyl)-thieno[2,3- b]pyridine-2-carboxylic acid amide A 8

C17 H15 N3 O S 3-Amino-6-cyclopropyl-4- phenyl-thieno[2,3-b]pyridine-2- carboxylic acid amide A 9

C17 H14 F3 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (3- trifluoromethyl-phenyl)-amide A 10

C21 H17 Cl N4 O S2 3-Amino-4-(2-chloro-phenyl)- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid thiazol-2-ylamide A 11

C16 H15 N3 O2 S 3-Amino-4-furan-2-yl-5,6,7,8- tetrahydro-thieno[2,3-b] quinoline-2-carboxylic acid amide A 12

C19 H14 F3 N3 O2 S 3-Amino-5-oxo-5,6,7,8- tetrahydro-thieno[2,3-b] quinoline-2-carboxylic acid (3-trifluoromethyl-phenyl)- amide A 13

C18 H17 Cl N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-chloro- phenyl)-amide A 14

C19 H19 F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid 4-fluoro- benzylamide A 15

C16 H22 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid diethylamide A 16

C18 H16 F2 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3,4-difluoro- phenyl)-amide A 17

C20 H22 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2,4-dimethyl- phenyl)-amide A 18

C18 H17 Cl N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-chloro- phenyl)-amide A 19

C18 H17 Cl N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2-chloro- phenyl)-amide A 20

C20 H23 N5 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- dimethylamino-phenyl)-amide A 21

C20 H19 F3 N4 O S 3-Amino-6-ethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- trifluoromethyl-phenyl)-amide A 22

C22 H24 N4 O S (3-Amino-6-ethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2-yl)-(3,4- dihydro-1H-isoquinolin-2-yl)- methanone A 23

C21 H24 N4 O2 S 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-methoxy- phenyl)-amide A 24

C20 H21 F N4 O S 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-fluoro- phenyl)-amide A 25

C23 H26 N4 O3 S 4-[(3-Amino-6-isopropyl- 5,6,7,8-tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carbonyl)-amino]-benzoic acid ethyl ester A 26

C22 H24 N4 O3 S 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (benzo[1,3]dioxol-5-ylmethyl)- amide A 27

C23 H22 N4 O S2 3-Amino-6-methyl-4-thiophen- 2-yl-5,6,7,8-tetrahydro- thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid o-tolylamide A 28

C23 H22 N4 O2 S2 3-Amino-6-methyl-4-thiophen- 2-yl-5,6,7,8-tetrahydro- thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-methoxy- phenyl)-amide A 29

C18 H17 F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-fluoro- phenyl)-amide A 30

C19 H17 F3 N4 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- trifluoromethoxy-phenyl)- amide A 31

C25 H23 Cl N4 O2 S 3-Amino-6-benzyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (5-chloro-2- methoxy-phenyl)-amide A 32

C22 H23 N5 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid [2-(1H-indol-3- yl)-ethyl]-amide A 33

C19 H18 N4 O3 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid benzo[1,3]dioxol-5-ylamide A 34

C22 H20 N4 O S2 3-Amino-6-methyl-4-thiophen- 2-yl-5,6,7,8-tetrahydro- thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid phenylamide A 35

C22 H26 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-tert-butyl- phenyl)-amide A 36

C22 H19 Cl N4 O S2 3-Amino-6-methyl-4-thiophen- 2-yl-5,6,7,8-tetrahydro- thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-chloro- phenyl)-amide A 37

C19 H19 Cl N4 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (5-chloro-2- methoxy-phenyl)-amide A 38

C18 H17 F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2-fluoro- phenyl)-amide A 39

C16 H17 N5 O S2 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-methyl- thiazol-2-yl)-amide A 40

C20 H19 F3 N4 O2 S 3-Amino-6-ethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2- trifluoromethoxy-phenyl)- amide A 41

C18 H18 Cl N5 O S 3-Amino-6-ethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2-chloro- pyridin-3-yl)-amide A 42

C19 H17 F3 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- trifluoromethyl-phenyl)-amide A 43

C20 H20 N4 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-acetyl- phenyl)-amide A 44

C18 H16 C12 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2,5-dichloro- phenyl)-amide A 45

C19 H19 Cl N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-chloro-4- methyl-phenyl)-amide A 46

C17 H16 Cl N5 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2-chloro- pyridin-3-yl)-amide A 47

C24 H32 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (1-adamantan- 1-yl-ethyl)-amide A 48

C18 H18 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid phenylamide A 49

C24 H22 N4 O S 3-Amino-6-methyl-4-phenyl- 5,6,7,8-tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid phenylamide A 50

C25 H24 N4 O2 S 3-Amino-6-methyl-4-phenyl 5,6,7,8-tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-methoxy- phenyl)-amide A 51

C26 H24 N4 O2 S 3-Amino-6-methyl-4-phenyl- 5,6,7,8-tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-acetyl- phenyl)-amide A 52

C20H18N6OS2•HCl 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-6,10-diaza- cyclohepta[f]indene-2- carboxylic acid (5-phenyl- [1,3,4]thiadiazol-2-yl)-amide hydrochloride A 53

C20 H17 N5 O S2 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (5-phenyl- [1,3,4]thiadiazol-2-yl)-amide A 54

C22 H18 F N3 O3 S 3-Amino-4-(3,4-dimethoxy- phenyl)-6-(4-fluoro-phenyl)- thieno[2,3-b]pyridine-2- carboxylic acid amide A 55

C16 H12 N4 O S3 3-Amino-6-thiophen-2-yl- thieno[2,3-b]pyridine-2- carboxylic acid (4-methyl- thiazol-2-yl)-amide A 56

C24 H25 F3 N4 O2 S 6-Acetyl-3-amino-4- trifluoromethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-tert-butyl- phenyl)-amide A 57

C23 H26 N4 O3 S2 2-[(3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carbonyl)-amino]-4,5,6,7- tetrahydro-benzo[b]thiophene- 3-carboxylic acid ethyl ester A 58

C19 H20 N4 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2-methoxy- phenyl)-amide A 59

C21 H21 F3 N4 O2 S 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- trifluoromethoxy-phenyl)- amide A 60

C21 H21 F3 N4 O S 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- trifluoromethyl-phenyl)-amide A 61

C19 H19 F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (5-fluoro-2- methyl-phenyl)-amide A 62

C19 H17 N5 O S2 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid benzothiazol- 2-ylamide A 63

C18 H16 Br2 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2,5-dibromo- phenyl)-amide A 64

C24 H21 Cl N4 O S 3-Amino-6-methyl-4-phenyl- 5,6,7,8-tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-chloro- phenyl)-amide A 65

C14 H12 F3 N5 O S2 3-Amino-6-methyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (5-ethyl-[1,3,4]thiadiazol-2-yl)- amide B 66

C26 H19 N3 O S 3-Amino-4,6-diphenyl- thieno[2,3-b]pyridine-2- carboxylic acid phenylamide B 67

C24 H21 N3 O2 S 3-Amino-6-(2-methoxy- phenyl)-4-phenyl-thieno[2,3- b]pyridine-2-carboxylic acid cyclopropylamide B 68

C11 H13 N3 O2 S 3-Amino-6-methoxymethyl-4- methyl-thieno[2,3-b]pyridine-2- carboxylic acid amide B 69

C21 H15 N5 O S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid diphenylamide B 70

C19 H19 N5 O2 S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (4-butoxy- phenyl)-amide B 71

C11 H13 N3 O S 3-Amino-6-propyl-thieno[2,3- b]pyridine-2-carboxylic acid amide B 72

C18 H17 N3 O2 S 3-Amino-4,6-dimethyl-5-(2- oxo-2-phenyl-ethyl)-thieno[2,3- b]pyridine-2-carboxylic acid amide B 73

C17 H14 Cl F3 N4 OS 3-Amino-6-propyl-thieno[2,3- b]pyridine-2-carboxylic acid (3-chloro-6-trifluoromethyl- pyridin-2-yl)-amide B 74

C21 H19 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid naphthalen-1- ylamide B 75

C18 H15 F3 N4 O3 S 3,6-Diamino-2-(3- trifluoromethyl- phenylcarbamoyl)-thieno[2,3- b]pyridine-5-carboxylic acid ethyl ester B 76

C11 H10 N4 O2 S 9-Methoxymethyl-7-methyl- 3H-pyrido[3′,2′:4,5]thieno[3,2- d][1,2,3]triazin-4-one B 77

C17 H18 N4 O S 3-Amino-4-dimethylamino- thieno[2,3-b]pyridine-2- carboxylic acid benzylamide B 78

C18 H16 F N3 O S 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (2-fluoro- phenyl)-amide B 79

C19 H18 F N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid (2-fluoro- phenyl)-amide B 80

C19 H20 N4 O3 S2 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid (4-sulfamoyl- phenyl)-amide B 81

C17 H16 Cl N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (4-chloro- phenyl)-amide B 82

C13 H15 N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid amide B 83

C20 H17 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid naphthalen-2- ylamide B 84

C23 H18 F N5 O3 S 3,6-Diamino-5-cyano-4-(3,4- dimethoxy-phenyl)-thieno[2,3- b]pyridine-2-carboxylic acid (4-fluoro-phenyl)-amide B 85

C17 H16 F3 N3 O2 S 3-Amino-6-thiophen-2-yl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid diethylamide B 86

C19 H16 N4 O2 S2 3-Amino-4-furan-2-yl-5,6,7,8- tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid thiazol-2-ylamide B 87

C22 H19 N3 O S 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid naphthalen-2- ylamide B 88

C19 H15 N5 O S2 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2- yl)-amide B 89

C19 H16 F3 N3 O2 S (3-Amino-6-phenyl-4- trifluoromethyl-thieno[2,3- b]pyridin-2-yl)-morpholin-4-yl- methanone B 90

C17 H12 F3 N5 O S3 3-Amino-6-thiophen-2-yl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (5-ethyl-[1,3,4]thiadiazol-2-yl)- amide B 91

C21 H17 N3 O S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid naphthalen-2-ylamide B 92

C16 H17 N5 O S2 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (5-ethyl- [1,3,4-thiadiazol-2-yl)-amide B 93

C18 H16 F3 N3 O S 3-Amino-6-ethyl-5-methyl- thieno[2,3-b]pyridine-2- carboxylic acid (3- trifluoromethyl-phenyl)-amide B 94

C21 H21 N3 O2 S 3-Amino-5-oxo-5,6,7,8- tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid (2,4,6-trimethyl-phenyl)-amide B 95

C19 H19 N3 O3 S 3-Amino-7,7-dimethyl-5-oxo- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid (furan-2-ylmethyl)-amide B 96

C19 H18 Cl N3 O S 5-Allyl-3-amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (3-chloro- phenyl)-amide B 97

C17 H16 Cl N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (3-chloro- phenyl)-amide B 98

C18 H16 F3 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (3- trifluoromethyl-phenyl)-amide B 99

C15 H13 N3 O2 S 3-Amino-4-furan-2-yl-6,7- dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid amide B 100

C25 H26 N4 O3 S 2,2-Dimethyl-5-morpholin-4-yl- 9-o-tolyl-1,4-dihydro-2H-9H-3- oxa-7-thia-6,9,11-triaza- benzo[b]fluoren-8-one B 101

C18 H19 N3 O2 S 3-Amino-6-(4-methoxy- phenyl)-thieno[2,3-b]pyridine- 2-carboxylic acid isopropylamide B 102

C18 H19 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid ethyl-phenyl- amide B 103

C20 H19 N5 O2 S2 3-Amino-6-methyl-4-thiophen- 2-yl-5,6,7,8-tetrahydro- thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (5-methyl- isoxazol-3-yl)-amide B 104

C19 H19 F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2-fluoro-4- methyl-phenyl)-amide B 105

C15 H18 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid cyclopropylamide B 106

C19 H20 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid benzylamide B 107

C16 H22 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid tert- butylamide B 108

C20 H22 N4 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-ethoxy- phenyl)-amide B 109

C18 H16 C12 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2,6-dichloro- phenyl)-amide B 110

C18 H16 Cl F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-chloro-4- fluoro-phenyl)-amide B 111

C18 H16 F2 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2,4-difluoro- phenyl)-amide B 112

C19 H17 N5 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-cyano- phenyl)-amide B 113

C19 H19 Cl N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid 2-chloro- benzylamide B 114

C19 H19 N5 O S2 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-cyano-4,5- dimethyl-thiophen-2-yl)-amide B 115

C20H18N6OS2•HCl 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-7,10-diaza- cyclohepta[f]indene-2- carboxylic acid (5-phenyl- [1,3,4]-thiadiazol-2-yl)-amide hydrochloride B 116

C19 H18 F N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid (4-fluoro- phenyl)-amide C 117

C20 H21 N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid m-tolylamide C 118

C20 H21 N3 O2 S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid (4-methoxy- phenyl)-amide C 119

C22 H16 F3 N3 O2 S 3-Amino-6-phenyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (4-methoxy-phenyl)-amide C 120

C18 H17 N3 O2 S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-acetyl- phenyl)-amide C 121

C19 H16 N4 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid quinolin-8- ylamide C 122

C20 H25 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid adamantan-1- ylamide C 123

C17 H13 F3 I N3 O S 3-Amino-6-methyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (4-iodo-2-methyl-phenyl)- amide C 124

C17 H17 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid phenylamide C 125

C21 H17 N3 O2 S 3-Amino-4-(4-methoxy- phenyl)-6-phenyl-thieno[2,3- b]pyridine-2-carboxylic acid amide C 126

C27 H21 N3 O2 S 3-Amino-4-(4-methoxy- phenyl)-6-phenyl-thieno[2,3- b]pyridine-2-carboxylic acid phenylamide C 127

C17 H15 N5 O S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (2,6-dimethyl- phenyl)-amide C 128

C20 H14 F3 N3 O S 3-Amino-6-methyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid naphthalen-1-ylamide C 129

C15 H9 Cl2 N5 O S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (3,4-dichloro- phenyl)-amide C 130

C16 H10 F3 N5 O S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (2- trifluoromethyl-phenyl)-amide C 131

C16 H11 F3 I N3 O S 3-Amino-4-methyl-6- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (2-iodo-phenyl)-amide C 132

C16 H13 F3 N4 O S 3-Amino-6-methyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (5-methyl-pyridin-2-yl)-amide C 133

C17 H13 N5 O3 S 2-[(3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carbonyl)-amino]-benzoic acid methyl ester C 134

C15 H10 Br N5 O S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (2-bromo- phenyl)-amide C 135

C15 H10 F N5 O S 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (2-fluoro- phenyl)-amide C 136

C15 H12 N6 O3 S2 3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carboxylic acid (4-sulfamoyl- phenyl)-amide C 137

C15 H17 N5 O2 S2 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (5-ethyl- [1,3,4]thiadiazol-2-yl)-amide C 138

C15 H19 N3 O S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid diethylamide C 139

C17 H21 N3 O2 S (3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza cyclohepta[f]inden-2-yl)- morpholin-4-yl-methanone C 140

C23 H21 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid diphenylamide C 141

C19 H19 N3 O3 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (4-acetyl- phenyl)-amide C 142

C21 H25 N3 O2 S 5-Acetyl-3-amino-6-methyl- thieno[2,3-b]pyridine-2- carboxylic acid adamantan-1- ylamide C 143

C26 H25 N5 O S 3,6-Diamino-5-cyano-4-(4- isopropyl-phenyl)-thieno[2,3- b]pyridine-2-carboxylic acid (2,3-dimethyl-phenyl)-amide C 144

C17 H16 N4 O3 S2 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (4-sulfamoyl-phenyl)-amide C 145

C14 H17 N3 O2 S (3-Amino-4,6-dimethyl- thieno[2,3-b]pyridin-2-yl)- morpholin-4-yl-methanone C 146

C20 H17 Br N4 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (6-bromo- quinolin-8-yl)-amide C 147

C18 H26 N4 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (1-ethyl- piperidin-3-yl)-amide C 148

C20 H19 N5 O3 S2 2-[(3,6-Diamino-5-cyano- thieno[2,3-b]pyridine-2- carbonyl)-amino]-4,5,6,7- tetrahydro-benzo[b]thiophene- 3-carboxylic acid ethyl ester C 149

C17 H11 F6 N3 O S 3-Amino-6-methyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (3-trifluoromethyl-phenyl)- amide C 150

C21 H16 N4 O2 S 9-Methoxymethyl-7-methyl-3- naphthalen-1-yl-3H- pyrido[3′,2′:4,5]thieno[3,2- d][1,2,3]triazin-4-one C 151

C19 H18 N4 O2 S 3-(2,4-Dimethyl-phenyl)-9- methoxymethyl-7-methyl-3H- pyrido[3′,2′:4,5]thieno[3,2- d][1,2,3]triazin-4-one C 152

C16 H10 N6 O S 3,6-Diamino-5-cyano- thieno[3,2-b]pyridine-2- carboxylic acid (4-cyano- phenyl)-amide C 153

C12 H11 N3 O S 2,7,9-Trimethyl-3H- pyrido[3′,2′:4,5]thieno[3,2- d]pyrimidin-4-one C 154

C11 H9 N3 O S 2,7-Dimethyl-3H- pyrido[3′,2′:4,5]thieno[3,2- d]pyrimidin-4-one C 155

C18 H17 N5 O4 S 3,6-Diamino-5-cyano-4-(3,4,5- trimethoxy-phenyl)-thieno[2,3- b]pyridine-2-carboxylic acid amide C 156

C19 H16 N4 O3 S 3-(4-Acetyl-phenyl)-9- methoxymethyl-7-methyl-3H- pyrido[3′,2′:4,5]thieno[3,2- d][1,2,3]triazin-4-one C 157

C17 H16 Br N3 O S 3-Amino-4,5,6-trimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-bromo- phenyl)-amide C 158

C14 H12 N4 O S 3-Amino-4-phenylamino- thieno[2,3-b]pyridine-2- carboxylic acid amide C 159

C17 H14 N4 O S 9-Dimethylamino-3-phenyl-3H- pyrido[3′,2′:4,5]thieno[3,2- d][1,2,3]pyrimidin-4-one C 160

C12 H15 N3 O S 3-Amino-5-ethyl-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid amide C 161

C14 H11 N3 O S 3-Amino-6-phenyl-thieno[2,3- b]pyridine-2-carboxylic acid amide C 162

C17 H14 F3 N3 O2 S 3-Amino-6-methyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (4-methoxy-phenyl)-amide C 163

C17 H17 N3 O2 S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-methoxy- phenyl)-amide C 164

C13 H10 N4 O S 3-Amino-6-pyridin-3-yl- thieno[2,3-b]pyridine-2- carboxylic acid amide C 165

C17 H14 F3 N3 O S 3-Amino-6-methyl-4- trifuoromethyl-thieno[2,3-b] pyridine-2-carboxylic acid p-tolylamide C 166

C10 H12 N4 O S 3-Amino-4-dimethylamino- thieno[2,3-b]pyridine-2- carboxylic acid amide C 167

C14 H19 N3 O S 3-Amino-4,6-dimethylamino- thieno[2,3-b]pyridine-2- carboxylic acid diethylamide C 168

C18 H20 N4 O3 S 2,2-Dimethyl-5-morpholin-4-yl- 1,4-dihydro-2H,9H-3-oxa-7- thia-6,9,11-triaza- benzo[c]fluoren-8-one C 169

C17 H22 N4 O3 S 1-Amino-8,8-dimethyl-5- morpholin-4-yl-8,9-dihydro-6H- 7-oxa-3-thia-4-aza- cyclopenta[a]naphthalene-2- carboxylic acid amide C 170

C17 H15 N5 O3 S 3,6-Diamino-5-cyano-4-(3,4- dimethoxy-phenyl)-thieno[2,3- b]pyridine-2-carboxylic acid amide C 171

C16 H20 N4 O2 S 1-Amino-5-morpholin-4-yl- 6,7,8,9-tetrahydro-thieno[2,3- c]isoquinoline-2-carboxylic acid amide C 172

C16 H14 Br N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-bromo- phenyl)-amide C 173

C17 H15 N3 O S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid phenylamide C 174

C21 H19 N3 O2 S 2-Benzyl-8,8-dimethyl-8,9- dihydro-2H,6H,7-oxa-11-thia- 2,4,10-triaza-benzo[b]fluoren- 1-one C 175

C20 H21 N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[b]indene-2- carboxylic acid p-tolylamide C 176

C17 H23 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid cyclohexylamide C 177

C17 H14 F N3 O S 3-Amino-6,7-dihydro-5H- cyclohepta[b]thieno[3,2- e]pyridine-2-carboxylic acid (4-fluoro-phenyl)-amide C 178

C16 H14 F N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (2-fluoro- phenyl)-amide C 179

C19 H19 N3 O S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (2,3-dimethyl-phenyl)-amide C 180

C17 H14 F N3 O S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (2-fluoro-phenyl)-amide C 181

C18 H19 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (2,3-dimethyl- phenyl)-amide C 182

C17 H18 N4 O2 S 5-Morpholin-4-yl-1,2,3,4- tetrahydro-9H-7-thia-6,9,11- triaza-benzo[c]fluoren-8-one C 183

C16 H16 N4 O3 S2 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-sulfamoyl- phenyl)-amide C 184

C18 H17 N3 O2 S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (4-methoxy-phenyl)-amide C 185

C17 H16 Cl N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (2-chloro- phenyl)-amide C 186

C17 H13 Cl F3 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (2-chloro-5- trifluoromethyl-phenyl)-amide C 187

C16 H19 N3 O2 S (3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinolin-2-yl)- morpholin-4-yl-methanone C 188

C16 H19 N3 O S (3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridin-2-yl)-piperidin-1-yl- methanone C 189

C18 H16 F3 N3 O S2 (3-Amino-6-thiophen-2-yl-4- trifluoromethyl-thieno[2,3- b]pyridin-2-yl)-piperidin-1-yl- methanone C 190

C15 H15 N5 O S2 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2-e] pyridine-2-carboxylic acid (5-ethyl-[1,3,4]thiadiazol-2-yl)- amide C 191

C18 H23 N3 O S (3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]inden-2-yl)- piperidin-1-yl-methanone C 192

C18 H11 F3 N4 O S2 3-Amino-6-phenyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid thiazol-2-ylamide C 193

C19 H15 Cl F3 N3 O S 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (2-chloro-5- trifluoromethyl-phenyl)-amide C 194

C19 H14 F3 N5 O S2 3-Amino-6-phenyl-4- trifluoromethyl-thieno[2,3-b] pyridine-2-carboxylic acid (5-ethyl-[1,3,4]thiadiazol-2-yl)- amide C 195

C16 H15 N3 O S2 3-Amino-4-thiophen-2-yl- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid amide C 196

C19 H18 F3 N3 O S 3-Amino-6-phenyl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid diethylamide C 197

C17 H15 Br Cl N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (4-bromo-3- chloro-phenyl)-amide C 198

C18 H12 F3 N3 O S 7,9-Dimethyl-3-(3- trifluoromethyl-phenyl)-3H- pyrido[3′,2′:4,5]thieno[3,2- d]pyrimidin-4-one C 199

C12 H13 N3 O3 S [(3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carbonyl)-amino]-acetic acid C 200

C16 H13 Cl F N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (3-chloro-4- fluoro-phenyl)-amide C 201

C15 H15 N3 O2 S 2,8,8-Trimethyl-8,9-dihydro- 2H,6H-7-oxa-11-thia-2,4,10- triaza-benzo[b]fluoren-1-one C 202

C17 H17 N3 O2 S 2-Allyl-8,8-dimethyl-8,9- dihydro-2H,6H,7-oxa-11-thia- 2,4,10-triaza-benzo[b]fluoren- 1-one C 203

C18 H19 N3 O2 S 8,8-Dimethyl-2-(2-methyl- allyl)-8,9-dihydro-2H,6H,7-oxa- 11-thia-2,4,10-triaza- benzo[b]fluoren-1-one C 204

C20 H20 N4 O2 S 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (4- acetylamino-phenyl)-amide C 205

C21 H23 N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid phenethyl- amide C 206

C18 H19 N3 O S 3-Amino-6-isobutyl-thieno[2,3- b]pyridine-2-carboxylic acid phenylamide C 207

C23 H19 N3 O S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[2,3- b]pyridine-2-carboxylic acid diphenylamide C 208

C20 H25 N3 O3 S 3-Amino-4-ethyl-7,7-dimethyl- 2-(morpholine-4-carbonyl)-7,8- dihydro-6H-thieno[2,3- b]quinolin-5-one C 209

C16 H17 N3 O3 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (furan-2- ylmethyl)-amide C 210

C18 H19 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid o-tolylamide C 211

C17 H15 Cl2 N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (2,5-dichloro phenyl)-amide C 212

C21 H16 N4 O4 S 3-Amino-4-furan-2-yl-6,7- dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (4-nitro-phenyl)-amide C 213

C22 H18 N4 O4 S 3-Amino-4-furan-2-yl-5,6,7,8- tetrahydro-thieno[2,3-b] quinoline-2-carboxylic acid (4-nitro-phenyl)-amide C 214

C20 H18 N4 O4 S 3-Amino-7,7-dimethyl-5-oxo- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid (4-nitro-phenyl)-amide C 215

C17 H14 N4 O3 S 3-Amino-6,7-dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (4-nitro-phenyl)-amide C 216

C19 H18 Br N3 O S 5-Allyl-3-amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-bromo- phenyl)-amide C 217

C19 H19 N3 O S 3-Amino-6,7,8,9-tetrahydro- 5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid phenylamide C 218

C23 H21 N3 O2 S 3-Amino-4-furan-2-yl-5,6,7,8- tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid o-tolylamide C 219

C23 H21 N3 O2 S 3-Amino-4-furan-2-yl-6,7- dihydro-5H- cyclopenta[b]thieno[3,2- e]pyridine-2-carboxylic acid (2-ethyl-phenyl)-amide C 220

C20 H21 N3 O S 3-Amino-3-p-tolyl-6,7,8,9- tetrahydro-5H-1-thia-10-aza- cyclohepta[f]indene-2- carboxylic acid amide C 221

C19 H11 F3 N4 O3 S2 3-Amino-6-thiophen-2-yl-4- trifluoromethyl-thieno[2,3- b]pyridine-2-carboxylic acid (4-nitro-phenyl)-amide C 222

C20 H18 N4 O4 S 3-Amino-7,7-dimethyl-5-oxo- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid (2-nitro-phenyl)-amide C 223

C20 H18 N4 O S3 3-Amino-4-thiophen-2-yl- 6,7,8,9-tetrahydro-5H-1-thia- 10-aza-cyclohepta[f]indene-2- carboxylic acid thiazol-2- ylamide C 224

C18 H16 Cl N3 O S 3-Amino-4-(4-chloro-phenyl)- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid amide C 225

C19 H18 N4 O3 S 5-Allyl-3-amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (4-nitro- phenyl)-amide C 226

C21 H19 N3 O4 S 3-Amino-7,7-dimethyl-5-oxo- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid benzo[1,3]dioxol-5-ylamide C 227

C19 H19 N3 O S 3-Amino-4-p-tolyl-5,6,7,8- tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid amide C 228

C18 H16 N4 O3 S 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (4-nitro- phenyl)-amide C 229

C18 H18 Cl N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (3-chloro-4- methyl-phenyl)-amide C 230

C23 H23 N3 O2 S 3,8,8-Trimethyl-2-phenethyl- 8,9-dihydro-2H,6H-7-oxa-11- thia-2,4,10-triaza- benzo[b]fluoren-1-one C 231

C21 H26 N4 O3 S 3,8,8-Trimethyl-2-(2-morpholin- 4-yl-ethyl)-8,9-dihydro-2H,6H- 7-oxa-11-thia-2,4,10-triaza- benzo[b]fluoren-1-one C 232

C14 H13 N3 O S2 8,8-Dimethyl-8,9-dihydro- 2H,6H-7,11-dithia-2,4,10- triaza-benzo[b]fluoren-1-one C 233

C24 H24 N4 O3 S 2,2-Dimethyl-5-morpholin-4-yl- 9-phenyl-1,4-dihydro-2H,9H-3- oxa-7-thia-6,9,11-triaza- benzo[c]fluoren-8-one C 234

C21 H28 N4 O4 S (1-Amino-8,8-dimethyl-5- morpholin-4-yl-8,9-dihydro-6H- 7-oxa-3-thia-4-aza- cyclopenta[a]naphthalen-2-yl)- morpholin-4-yl-methanone C 235

C21 H21 N3 O3 S 3-Ethyl-2-furan-2-ylmethyl-8,8- dimethyl-8,9,dihydro-2H,6H- 7-oxa-11-thia-2,4,10-triaza- benzo[b]fluoren-1-one C 236

C20 H23 N3 O3 S 3,8,8-Trimethyl-2-(tetrahydro- furan-2-ylmethyl)-8,9-dihydro- 2H,6H,7-oxa-11-thia-2,4,10- triaza-benzo[b]fluoren-1-one C 237

C19 H25 N3 O3 S 3-Acetylamino-7,7-dimethyl- 7,8-dihydro-5H-pyrano[4,3- b]thieno[3,2-e]pyridine-2- carboxylic acid butylamide C 238

C19 H15 N3 O2 S2 3-Amino-4-(4-methoxy- phenyl)-6-thiophen-2-yl- thieno[2,3-b]pyridine-2- carboxylic acid amide C 239

C19 H19 N3 O4 S 4-[(3-Amino-4-methoxymethyl- 6-methyl-thieno[2,3-b]pyridine- 2-carbonyl)-amino]-benzoic acid methyl ester C 240

C20 H20 Cl N3 O4 S 5-[(3-Amino-4-methoxymethyl- 6-methyl-thieno[2,3-b]pyridine- 2-carbonyl)-amino]-2-chloro- benzoic acid ethyl ester C 241

C23 H22 N4 O2 S2 3-Amino-4-(4-ethoxy-phenyl)- 5,6,7,8-tetrahydro-thieno[2,3- b]quinoline-2-carboxylic acid thiazol-2-ylamide C 242

C18 H18 F N3 O2 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (2-fluoro-5- methyl-phenyl)-amide C 243

C21 H24 N4 O3 S 3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid (4-morpholin- 4-yl-phenyl)-amide C 244

C24 H28 N4 O4 S 1-Amino-8,8-dimethyl-5- morpholin-4-yl-8,9-dihydro-6H- 7-oxa-3-thia-4-aza- cyclopenta[a]naphthalene-2- carboxylic acid (4-methoxy- phenyl)-amide C 245

C24 H22 Cl2 N4 O3 S 9-(3,4-Dichloro-phenyl)-2,2- dimethyl-5-morpholin-4-yl-1,4- dihydro-2H,9H-3-oxa-7-thia- 6,9,11-triaza-benzo[c]fluoren- 8-one C 246

C25 H38 N4 O3 S 1-Amino-8,8-dimethyl-5- morpholin-4-yl-8,9-dihydro-6H- 7-oxa-3-thia-4-aza- cyclopenta[a]naphthalene-2- carboxylic acid dibutylamide C 247

C24 H28 N4 O4 S 1-Amino-8,8-dimethyl-5- morpholin-4-yl-8,9-dihydro-6H- 7-oxa-3-thia-4-aza- cyclopenta[a]napthalene-2- carboxylic acid (2-methoxy- phenyl)-amide C 248

C22 H26 N4 O4 S 2,2,9a-Trimethyl-5-(4- morpholinyl)-1,4,9,9a,10,11- hexahydro-2H- pyrano[4″,3″:4,5′]pyrido [3′,2′:4,5]thieno[2,3-e]pyrrolo [1,2-a]pyrimidine-8,12-dione C 249

C19 H19 N3 O2 S (3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridin-2- yl)-(2,3-dihydro-indol-1-yl)- methanone C 250

C18 H17 N3 O4 S (3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridine-2- carboxylic acid benzo[1,3]dioxol-5-ylamide C 251

C15 H19 N3 O3 S (3-Amino-4-methoxymethyl-6- methyl-thieno[2,3-b]pyridin-2- yl)-mopholin-4-yl-methanone C 252

C21 H17 Cl2 N3 O2 S 2-(2,4-Dichloro-benzyl)-8,8- dimethyl-8,9-dihydro-2H,6H-7- oxa-11-thia-2,4,10-triaza- benzo[f]fluoren-1-one C 253

C16 H21 N3 O2 S2 3-Amino-7,7-dimethyl-7,8- dihydro-5H-1,6-dithia-9-aza- cyclopenta[b]naphthalene-2- carboxylic acid (3-hydroxy- propyl)-amide C 254

C19 H16 F3 N3 O S 3-Amino-5,6,7,8-tetrahydro- thieno[2,3-b]quinoline-2- carboxylic acid (2- trifluoromethyl-phenyl)-amide C 255

C15 H16 N4 O2 S 3-Amino-4,5,6-trimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (5-methyl- isoxazol-3-yl)-amide C 256

C18 H17 N3 O2 S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (3-acetyl- phenyl)-amide C 257

C18 H19 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid phenethyl- amide C 258

C15 H15 N3 O2 S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (furan-2- ylmethyl)-amide C 259

C18 H19 N3 O2 S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid (2-methoxy-5- methyl-phenyl)-amide C 260

C17 H17 N3 O S 3-Amino-4,6-dimethyl- thieno[2,3-b]pyridine-2- carboxylic acid benzylamide C 261

C19 H22 N4 O3 S 2-Ethyl-2-methyl-5-morpholin- 4-yl-1,4-dihydro-2H,9H-3-oxa- 7-thia-6,9,11-triaza- benzo[c]fluoren-8-one C 262

C22 H21 F3 N4 O3 S 6-Acetyl-3-amino-4- trifluoromethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid 4-methoxy- benzylamide C 263

C22 H24 N4 O5 S 2-[(3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carbonyl)-amino]-4,5- dimethoxy-benzoic acid methyl ester C 264

C16 H17 N5 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3-methyl- isoxazol-5-yl)-amide C 265

C19 H19 F N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4-fluoro-2- methyl-phenyl)-amide C 266

C20 H22 N4 O2 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid 4-methoxy- benzylamide C 267

C20 H22 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid phenethyl- amide C 268

C16 H18 N6 O S2 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (5-ethyl- [1,3,4]thiadiazol-2-yl)-amide C 269

C20 H20 N4 O3 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (benzo[1,3]dioxol-5-ylmethyl)- amide C 270

C15 H20 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid isopropylamide C 271

C18 H26 N4 O S 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid diethylamide C 272

C18 H22 N6 O S2 3-Amino-6-isopropyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (5-ethyl- [1,3,4]thiadiazol-2-yl)-amide C 273

C19 H22 N4 O S2 3-Amino-6-methyl-4-thiophen- 2-yl-5,6,7,8-tetrahydro- thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid isopropylamide C 274

C23 H26 N4 O3 S (3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridin-2-yl)-(6,7- dimethoxy-3,4-dihydro-1H- isoquinolin-2-yl)-methanone C 275

C21 H29 N5 O3 S 4-[(3-Amino-6-ethyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carbonyl)-amino]-piperidine-1- carboxylic acid ethyl ester C 276

C22 H27 N5 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (4- diethylamino-phenyl)-amide C 277

C18 H16 F2 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (2,6-difluoro- phenyl)-amide C 278

C14 H14 N6 O S2 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid [1,3,4]thiadiazol-2-ylamide C 279

C21 H24 N4 O3 S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid 3,4- dimethoxy-benzylamide C 280

C19 H17 F3 N4 O S 3-Amino-6-methyl-5,6,7,8- tetrahydro-thieno[2,3- b][1,6]naphthyridine-2- carboxylic acid (3- trifluoromethyl-phenyl)-amide C

Example 14 Synthesis of 3-Amino-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide hydrochloride (C12 or Compound 115 in Table 1)

Step A—Synthesis of 2-chloro-N-(5-phenyl-1,3,4-thiadiazol-2-yl)acetamide (C3)

To a mixture of 5-phenyl-1,3,4-thiadiazol-2-amine (C1, 1.06 g, 6 mmol) and K₂CO₃ (0.83 g, 6 mmol) in anhydrous DMF (20 mL), was added chloroacetyl chloride (C2, 0.48 mL, 6 mmol). The mixture was stirred at room temperature for 4 h. The reaction mixture was then poured into ice-water (100 mL), stirred, and then filtered. The resulting solid was washed with water, and then dried in the oven under vacuum to afford compound C3 (1.15 g, 76%) as a white solid.

Step B—Synthesis of tert-butyl (4E)-4-(hydroxymethylene)-5-oxoazepane-1-carboxylate (C6) and tert-butyl (3E)-3-(hydroxymethylene)-4-oxoazepane-1-carboxylate (C7)

A solution of tert-butyl 4-oxoazepane-1-carboxylate (C4, 2.56 g, 12.0 mmol) and N-[tert-butoxy(dimethylamino)methyl]-N,N-dimethylamine (C5, 2.97 mL, 14.4 mmol) in THF (30 mL) was refluxed for 8 h. After cooling, the reaction mixture was treated with water (20 mL), stirred at room temperature for 15 min, and then extracted with EtOAc. The organic layer was dried over Na₂SO₄, and concentrated under reduced pressure to give C6 (major) and C7 (minor) as a colorless oil (2.63 g, 91%), which was used as a mixture in the next step reaction directly.

Step C—Synthesis of tert-butyl 3-cyano-2-thioxo-1,2,5,6,8,9-hexahydro-7H-pyrido[2,3-d]azepine-7-carboxylate (C9) and tert-butyl 3-cyano-2-thioxo-1,2,5,7,8,9-hexahydro-6H-pyrido[3,2-c]azepine-6-carboxylate (C10)

A solution of a mixture of C6 and C7 (2.36 g, 9.8 mmol), 2-cyanoethanethioamide (C8, 0.98 g, 9.8 mmol) and piperidine acetate (10 mL) [prepared from glacial acetic acid (4.2 mL), water (10 mL) and piperidine (7.2 mL)] in H₂O (50 mL) was refluxed for 2 h. After cooling, the reaction mixture was extracted with EtOAc. The combined organic layer was dried over Na₂SO₄, and concentrated under reduced pressure. The given residue was purified through silica gel chromatography (EtOAc/Hexane 60:40) to afford the desired compound C9, a yellow solid (0.75 g, 25%) as the major product. MS: MH⁺=306 and C10 (0.188 g, 6.3%) as the minor product. MS: MH⁺=306.

Step D—Synthesis of 3-amino-7-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide (C11)

A mixture of C9 (750 mg, 2.46 mmol), C3 (623 mg, 2.46 mmol) and sodium acetate (302 mg, 3.68 mmol) in EtOH (20 mL) was refluxed for 4 h. After cooling, the reaction mixture was poured into water (100 mL), stirred, and then filtered. The given solid was dried in the oven under vacuum, and then recrystallized in EtOAc to afford compound C11 (500 mg, 39%) as a yellow solid. MS: MNa⁺=545.

Step E—Synthesis of 3-Amino-6,7,8,9-tetrahydro-5H-1-thia-7,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide hydrochloride (C12, Compound 115 in the Table)

The Boc-protected amine C11 (150 mg, 0.29 mmol) was stirred in a solution of 4 M HCl in 1,4-dioxane (5 mL) at room temperature for 2 h. Then the mixture was concentrated under reduced pressure and the product was precipitate out in hexane. The given solid was further purified by recrystallization from MeOH/CH₂Cl₂ to afford the target compound C12 (100 mg, 76%) as a red solid. HPLC: purity>97%. MS: MH⁺=423. ¹H NMR (DMSO-d₆+D₂O): δ 8.02 (s, 1H), 7.60 (d, 2H), 7.42 (m, 3H), 4.26 (s, 2H), 3.45 (s, 2H), 3.12 (m, 2H), 1.96 (s, 2H).

Example 15 Synthesis of 3-Amino-6,7,8,9-tetrahydro-5H-1-thia-6,10 diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide hydrochloride (C14 or Compound 52 in Table 1)

The compound C14 was synthesized in a manner similar to Compound 115 (C12) by utilizing isolated tert-butyl 3-cyano-2-thioxo-1,2,5,7,8,9-hexahydro-6H-pyrido[3,2-c]azepine-6-carboxylate (C10). The compound 3-amino-6-tert-butyloxycarbonyl-6,7,8,9-tetrahydro-5H-1-thia-6,10-diaza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide (C13) was confirmed with mass spectroscopy. C14 was obtained as a yellow solid. MS: MH⁺=423. ¹H NMR (DMSO-d₆+D₂O): δ 8.24 (s, 1H), 7.86 (s, 2H), 7.53 (s, 3H), 3.36 (s, 2H), 3.28 (s, 4H), 3.17 (s, 2H).

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All references cited herein are herein incorporated by reference in their entirety for all purposes.

The invention has been described in terms of preferred embodiments thereof, but is more broadly applicable as will be understood by those skilled in the art. The scope of the invention is only limited by the following claims. 

What is claimed is:
 1. A pharmaceutical composition comprising a pharmaceutically acceptable carrier and a compound selected from the group consisting of: 3-amino-6,7,8,9-tetrahydro-5H-1-thia-10-aza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide; 1-amino-5-methyl-6,7,8,9-tetrahydro-thieno[2,3-c]isoquinoline-2-carboxylic acid (4-methyl-thiazol-2-yl)-amide; 3,6-diamino-5-cyano-4-furan-2-yl-thieno[2,3-b]pyridine-2-carboxylic acid (4-bromo-phenyl)-amide; 3-amino-6-ethyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carboxylic acid (4-trifluoromethyl-phenyl)-amide; 4-[(3-amino-6-isopropyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carbonyl)-amino]-benzoic acid ethyl ester; 3-amino-6-methyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carboxylic acid (4-trifluoromethoxy-phenyl)-amide and 3-amino-6-thiophen-2-yl-thieno[2,3-b]pyridine-2-carboxylic acid (3-trifluoromethyl-phenyl)-amide.
 2. The composition of claim 1, wherein the compound of Formula I is 3-amino-6,7,8,9-tetrahydro-5H-1-thia-10-aza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.
 3. A method for the treatment or of a Dengue virus, comprising administering in a therapeutically effective amount to a mammal in need thereof, a compound selected from the group consisting of: 3-amino-6,7,8,9-tetrahydro-5H-1-thia-10-aza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide; 1-amino-5-methyl-6,7,8,9-tetrahydro-thieno[2,3-c]isoquinoline-2-carboxylic acid (4-methyl-thiazol-2-yl)-amide; 3,6-diamino-5-cyano-4-furan-2-yl-thieno[2,3-b]pyridine-2-carboxylic acid (4-bromo-phenyl)-amide; 3-amino-6-ethyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carboxylic acid (4-trifluoromethyl-phenyl)-amide; 4-[(3-amino-6-isopropyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carbonyl)-amino]-benzoic acid ethyl ester; 3-amino-6-methyl-5,6,7,8-tetrahydro-thieno[2,3-b][1,6]naphthyridine-2-carboxylic acid (4-trifluoromethoxy-phenyl)-amide and 3-amino-6-thiophen-2-yl-thieno[2,3-b]pyridine-2-carboxylic acid (3-trifluoromethyl-phenyl)-amide or a pharmaceutically acceptable salt thereof.
 4. The method of claim 3, wherein the compound of Formula I is 3-amino-6,7,8,9-tetrahydro-5H-1-thia-10-aza-cyclohepta[f]indene-2-carboxylic acid (5-phenyl-[1,3,4]thiadiazol-2-yl)-amide.
 5. The method of claim 3, wherein the mammal is a human.
 6. The method of claim 3, wherein said Dengue virus is selected from the group consisting of DEN-I, DEN-2, DEN-3, and DEN-4.
 7. The method of claim 3, wherein said Dengue virus is associated with Dengue fever.
 8. The method of claim 7, wherein said Dengue fever is selected from the group consisting of classical dengue fever, dengue hemorrhagic fever syndrome, and dengue shock syndrome.
 9. The method of claim 3, which further comprises coadministration of at least one agent selected from the group consisting of antiviral agent, vaccine, and interferon.
 10. The method of claim 9, wherein said interferon is pegylated.
 11. The pharmaceutical composition according to claim 1, wherein said pharmaceutical composition is suitable for administration in a human or animal, wherein said administration is selected from the group consisting of: oral administration, rectal administration, parenteral administration, intravaginal administration, intraperitoneal administration and administration by inhalation.
 12. The pharmaceutical composition of claim 1, wherein said pharmaceutically acceptable carrier is selected form the group consisting of solvents, diluents, dispersion aids, suspension aids, surface active agents, isotonic agents, thickening agents, emulsifying agents, preservatives, solid binders and lubricants.
 13. The pharmaceutical composition of claim 1, wherein said pharmaceutically acceptable carrier is solid.
 14. The pharmaceutical composition of claim 1, wherein said pharmaceutically acceptable carrier is liquid.
 15. The pharmaceutical composition of claim 11, wherein said parenteral administration is selected from the group consisting of: intramuscular injection, subcutaneous injection and intravenous infusion. 